Cascade Event
The Cascade Event is arriving soon in Hero Wars, officially titled the Under the Power of Water Event. Scheduled to begin on September 22, this special adventure brings unique mechanics, new relics, and exclusive rewards. Like previous events such as Lyria and Guus, it introduces boss fights, survival-based gameplay, and an event currency that changes how players plan their progress.
This guide covers everything we know so far about the Cascade Event — from the boss fight system to relic upgrades, energy requirements, the battle pass, and quest structure. By preparing early, you can maximize rewards and avoid wasting valuable resources once the Under the Power of Water Event begins.
Cascade Event Overview
The Cascade Event follows the style of Lyria and Guus, featuring:
- Survival-based boss fights
- Relic upgrades that change event rewards
- Special Stall Coins as the event currency
- An exclusive mini-season
- A unique adventure map
- Event-specific buffs
Unlike standard events, the Under the Power of Water Event emphasizes strategy, resource management, and careful planning.
Cascade Event Boss Fight
At the heart of the Cascade Event lies the boss fight. Similar to the Guus and Lyria events, this challenge focuses on endurance, not raw damage.
- Each round your team survives, you earn Stall Coins.
- Stall Coins can be exchanged in the event shop for hero soul stones, upgrade items, and Titan materials.
- Once defeated, you can re-enter the fight and continue gathering coins.
- Success depends on lineups with strong healers, shields, and defensive synergy.
The longer you stall, the more Stall Coins you collect, making survival the true strategy of the Under the Power of Water Event.
Boss Fights
All boss fights in this guide have been fully tested and verified by Zeus to ensure accuracy and reliable strategies.
Chapter 1 Surge Of Strength – Buff 0
Chapter 2 Wave of Trouble – Buff 0
Chapter 3 Whirlpool of Fate
Chapter 4 Lighthouse Breakdown
Chapter 5 Whispers From the D
Chaoter 6 Storm Of Stillnes
Chapter 7 Moonlite Shore
Cascade Event Rewards
The Cascade Event introduces a series of seven unique boss fights, each tied to a different chapter. While the chapter names will be rebranded under the Cascade theme, the rewards for completing them remain exactly the same. Each stage requires a specific number of Buffs and Energy Crystals to progress, and defeating the boss grants valuable resources such as Valor Coins, Sapphire Medallions, Soul Stone Chests, Skin Stone Chests, Gifts of the Dominion, and even the Absolute Elemental Spirit Summoning Sphere.
Remember — the Energy Crystals shown in the table below are per chapter only, not cumulative. To unlock all buffs and claim every reward, you’ll need to progress through all seven chapters step by step. This structure makes the Cascade event both a resource challenge and a tactical progression path for players aiming to maximize their gains.
Cascade Chapters & Rewards
These are the seven boss-fight chapters. Names will be renamed to Cascade event variants later, rewards stay the same. Energy Crystals are per chapter, not cumulative.
(per chapter)
1 Hero Soul Stone Chest
10,000 Valor Coin
1 Sapphire Medallion
30 Large Skin Stone Chest20,000 Valor Coin2 Sapphire Medallion
1 Epic Gift of the Dominion20,000 Valor Coin2 Sapphire Medallion
1 Legendary Gift of the Dominion20,000 Valor Coin2 Sapphire Medallion1 Hero Resource Chest50,000 Valor Coin10 Sapphire Medallion
1 Gift of the Dominion50,000 Valor Coin10 Sapphire Medallion
1 Absolute Elemental Spirit Summoning Sphere50,000 Valor Coin10 Sapphire MedallionUnlocking Cascade
To recruit Cascade, players must collect 630 soul stones. These are obtained by spending Valor Coins, with a clear table showing how many coins are required for each star rank depending on relic levels. Careful planning is needed to reach the final unlock in Cascade Event.
| Star | Soul Stones | Cumulative |
|---|---|---|
| ★ | 10 | 10 |
| ★★ | 20 | 30 |
| ★★★ | 50 | 80 |
| ★★★★ | 100 | 180 |
| ★★★★★ | 150 | 330 |
| ★★★★★★ | 300 | 630 |
| Total | 630 | 630 |
Valor Coins Needed for Cascade
Upgrading Cascade to 6★ requires a significant investment of Valor Coins, and the exact amount depends on your Grail of Generosity relic level. The higher the relic level, the lower the Valor Coin cost for each upgrade.
At lower star ranks, the difference isn’t dramatic. But once you’re aiming for Cascade’s final stars, the reduction from Grail upgrades saves a massive amount of coins. This makes upgrading the relic an essential step if you plan to fully develop Cascade during the Under the Power of Water Event.
The table below shows how many Valor Coins are needed for each star rank at different Grail of Generosity levels:
| Star Rank |  Lv1 |
Lv2 |
Lv3 |
Lv4 |
Lv5 |
Lv6 |
|---|---|---|---|---|---|---|
| ★★ | 20,800 | 20,000 | 19,200 | 18,300 | 17,500 | 16,700 |
| ★★★ | 34,700 | 33,300 | 31,900 | 30,600 | 29,200 | 27,800 |
| ★★★★ | 69,400 | 66,700 | 63,900 | 61,100 | 58,300 | 55,600 |
| ★★★★★ | 104,200 | 100,000 | 95,800 | 91,700 | 87,500 | 83,300 |
| ★★★★★★ | 208,300 | 200,000 | 191,700 | 183,300 | 175,000 | 166,700 |
Cascade Event Relics
Three relics define the Cascade Event. Each provides unique benefits and upgrade paths:
- Tome of Greed: Grants extra Stall Coins whenever you spend energy. Can be upgraded to level 15.
- Grail of Generosity: Reduces reward costs in the Altar of Fate. Can be upgraded to level 18.
- Amulet of Battle: Boosts buffs during boss fights to strengthen your lineup.
Upgrading relics requires strategic resource allocation. The Under the Power of Water Event doesn’t offer a single “optimal” route — players must balance between relic upgrades, boss fights, and energy management.
Tome of Greed — Energy & Valor Coin Bonus
Tome of Greed adds more Valor Coins for the event as you spend energy.
Each level increases your bonus by +1,000 Valor Coins. Because upgrades cost energy, it’s best to push this relic before you start heavy energy spending during the Cascade Event / Under the Power of Water Event.
The table below lists the energy cost per level and the total Valor Coin bonus at that level.
| Level |
Energy Cost (per level)
|
Valor Coin Bonus (at level)
|
|---|---|---|
| 1 | 0 | 1,000 |
| 2 | 10 | 2,000 |
| 3 | 20 | 3,000 |
| 4 | 30 | 4,000 |
| 5 | 40 | 5,000 |
| 6 | 50 | 6,000 |
| 7 | 60 | 7,000 |
| 8 | 70 | 8,000 |
| 9 | 80 | 9,000 |
| 10 | 80 | 10,000 |
| 11 | 80 | 11,000 |
| 12 | 80 | 12,000 |
| 13 | 80 | 13,000 |
| 14 | 80 | 14,000 |
| 15 | 80 | 15,000 |
| Total | 840 | 15,000 |
Grail of Generosity Upgrade Costs
The Grail of Generosity relic in the Cascade Event reduces the cost of rewards in the Altar of Fate. Each level you upgrade lowers the price, allowing you to stretch your Valor Coins further. Since upgrading requires energy, it’s important to know exactly how much you’ll need at each stage and how much of a reduction you’ll unlock.
The table below lists the energy cost per level and the coin cost reduction you gain in the Altar of Fate. Use this information to plan your energy spending and decide how far to push the relic during the Under the Power of Water Event.
| Level | Energy Cost |
Reduction in Altar of Fate Cost |
|---|---|---|
| 1 | 0 | 100 (2800 → 2700) |
| 2 | 10 | 200 (2800 → 2600) |
| 3 | 20 | 300 (2800 → 2500) |
| 4 | 30 | 400 (2800 → 2400) |
| 5 | 40 | 500 (2800 → 2300) |
| 6 | 50 | 600 (2800 → 2200) |
| 7 | 60 | 700 (2800 → 2100) |
| 8 | 70 | 800 (2800 → 2000) |
| 9 | 80 | 900 (2800 → 1900) |
| 10 | 90 | 1000 (2800 → 1800) |
| 11 | 100 | 1100 (2800 → 1700) |
| 12 | 100 | 1200 (2800 → 1600) |
| 13 | 100 | 1300 (2800 → 1500) |
| 14 | 100 | 1400 (2800 → 1400) |
| 15 | 100 | 1500 (2800 → 1300) |
| 16 | 100 | 1600 (2800 → 1200) |
| 17 | 100 | 1700 (2800 → 1100) |
| 18 | 100 | 1800 (2800 → 1000) |
| Total | 1250 |
Energy Requirements For Boss Fight
Completing all Cascade boss in Cascade Event fights requires 790 energy in total. With chapter-by-chapter breakdowns available, players can calculate exactly how much they need before spending.
Once this threshold is met, any additional energy can safely be directed toward upgrading relics like the Tome of Greed and Grail of Generosity.
| Level |
Buffs
|
Energy Cost
|
Cumulative Energy |
|---|---|---|---|
| Unlocks Chapter 3 — Target Level 5 (Cumulative at L5: 50) | |||
| 1 | 0 | 0 | 0 |
| 2 | 20 | 10 | 10 |
| 3 | 30 | 10 | 20 |
| 4 | 40 | 10 | 30 |
| 5 | 50 | 20 | 50 |
| Chapter 3 Summary | — | From L1 → L5: 50 | Cumulative: 50 |
| Unlocks Chapter 4 — Target Level 10 (Cumulative at L10: 160) | |||
| 6 | 60 | 20 | 70 |
| 7 | 70 | 20 | 90 |
| 8 | 80 | 20 | 110 |
| 9 | 90 | 20 | 130 |
| 10 | 100 | 30 | 160 |
| Chapter 4 Summary | — | From L5 → L10: 110 | From L1 → L10: 160 |
| Unlocks Chapter 5 — Target Level 15 (Cumulative at L15: 320) | |||
| 11 | 110 | 30 | 190 |
| 12 | 120 | 30 | 220 |
| 13 | 130 | 30 | 250 |
| 14 | 140 | 30 | 280 |
| 15 | 150 | 40 | 320 |
| Chapter 5 Summary | — | From L10 → L15: 160 | From L1 → L15: 320 |
| Unlocks Chapter 6 — Target Level 20 (Cumulative at L20: 530) | |||
| 16 | 160 | 40 | 360 |
| 17 | 170 | 40 | 400 |
| 18 | 180 | 40 | 440 |
| 19 | 190 | 40 | 480 |
| 20 | 200 | 50 | 530 |
| Chapter 6 Summary | — | From L15 → L20: 210 | From L1 → L20: 530 |
| Unlocks Chapter 7 — Target Level 25 (Cumulative at L25: 790) | |||
| 21 | 210 | 50 | 580 |
| 22 | 220 | 50 | 630 |
| 23 | 230 | 50 | 680 |
| 24 | 240 | 50 | 730 |
| 25 | 250 | 60 | 790 |
| Chapter 7 Summary | — | From L20 → L25: 260 | From L1 → L25: 790 |
| Total to Unlock Chapter 7 (L1 → L25) | — | — | 790 |
Cascade Event Battle Pass
The Cascade Event also features a Battle Pass. Players aiming to maximize Cascade will likely need to purchase it, as it contains the locked Mythic Skin for Cascade.
- Free rewards are available at each level.
- The Golden Pass unlocks premium rewards including the Mythic Skin.
Battle Pass Rewards – Cascade Event
| Level | Free Rewards | Golden Ticket Rewards |
|---|---|---|
| 1 | 10 Energy Crystal | 1 Player’s Avatar |
| 2 | 1,000 Emerald | 5,000 Emerald |
| 3 | 50 Skin Stone Chest | 250 Skin Stone Chest |
| 4 | 2 Soul Crystal | 10 Soul Crystal |
| 5 | 10 Energy Crystal | 50 Energy Crystal |
| 6 | 50 Wish Crystal | 250 Wish Crystal |
| 7 | 4,000 Artifact Coin | 20,000 Artifact Coin |
| 8 | 20 Rare Enchantment Rune | 100 Rare Enchantment Rune |
| 9 | 40 Absolute Artifact Essence | 160 Absolute Artifact Essence |
| 10 | 10 Energy Crystal | 50 Energy Crystal |
| 11 | 2 Bottled Energy | 10 Bottled Energy |
| 12 | 3 Chaos Core | 15 Chaos Core |
| 13 | 50 Wish Crystal | 250 Wish Crystal |
| 14 | 50 Skin Stone Chest | 250 Skin Stone Chest |
| 15 | 10 Energy Crystal | 50 Energy Crystal |
| 16 | 20 Rare Enchantment Rune | 100 Rare Enchantment Rune |
| 17 | 40 Absolute Artifact Scroll | 160 Absolute Artifact Scroll |
| 18 | 1,000 Emerald | 5,000 Emerald |
| 19 | 2 Bottled Energy | 10 Bottled Energy |
| 20 | 2 Explorer’s Move | 20 Explorer’s Move |
| 21 | 50 Wish Crystal | 250 Wish Crystal |
| 22 | 2,000,000 Gold | 10,000,000 Gold |
| 23 | 4,000 Artifact Coin | 20,000 Artifact Coin |
| 24 | 40 Absolute Artifact Essence | 160 Absolute Artifact Essence |
| 25 | 1 Sapphire Medallion | 5 Sapphire Medallion |
| 26 | 2 Bottled Energy | 10 Bottled Energy |
| 27 | 1,000 Emerald | 5,000 Emerald |
| 28 | 50 Wish Crystal | 250 Wish Crystal |
| 29 | 40 Wish Insignia | 200 Wish Insignia |
| 30 | 2 Explorer’s Move | 20 Explorer’s Move |
| 31 | 20 Rare Enchantment Rune | 100 Rare Enchantment Rune |
| 32 | 40 Absolute Artifact Scroll | 160 Absolute Artifact Scroll |
| 33 | 50 Skin Stone Chest | 250 Skin Stone Chest |
| 34 | 2 Bottled Energy | 10 Bottled Energy |
| 35 | 1 Sapphire Medallion | 5 Sapphire Medallion |
| 36 | 1,000 Emerald | 5,000 Emerald |
| 37 | 40 Absolute Artifact Metal | 160 Absolute Artifact Metal |
| 38 | 40 Wish Insignia | 200 Wish Insignia |
| 39 | 2 Eternal Seed | 10 Eternal Seed |
| 40 | 1 Sapphire Medallion | 1 Cascade’s Mythic Skin |
| 41– | 2 Event Box | 10 Event Box |
Cascade Event Quests
The Under the Power of Water Event includes two sets of quests:
Main Tasks
These are your core, repeatable objectives for the event. Each line shows the maximum progress that counts toward rewards.
- Win battles in the event — MAX 64
Clear fights on the event map and in boss encounters. Each win moves the counter; caps at 64. - Buy Emerald — MAX 120,000
Any Emerald purchase contributes up to a total of 120,000. - Spend Emerald — MAX 150,000
Use Emeralds on your usual priorities; only the first 150,000 spent are counted. - Get a hero of a maximum rank by collecting Fragments in the Hero Stall — MAX 11
Recruit or rank-up heroes via the Hero Stall by gathering fragments. Credit is counted up to 11 heroes. - Buy any pet in the Hero Stall — MAX 10
Purchase pets from the Hero Stall. Up to 10 count toward the quest. - Get VIP points — MAX 7,000
Earn VIP points through purchases or bundles; the quest stops tracking after 7,000. - Spend Stall Coin — MAX 5,000
Use your Stall Coins in the event shop; only the first 5,000 spent are recorded. - Spend Sapphire Medallion — MAX 100
Spend up to 100 Sapphire Medallions for full credit.
Sub Tasks (Cascade-Focused)
These objectives push Cascade’s development during the event. All caps below are the maximum amounts counted for rewards.
- Gift of the Elements level for Cascade — MAX 50
Invest Gift of the Elements levels into Cascade, up to 50 counted. - Evolution level for Cascade — MAX Star 6
Evolve Cascade through star ranks; credit caps at 6★. - Promote Cascade — MAX Red
Promote Cascade through color ranks; tracking ends at Red. - 1st Artifact level for Cascade — MAX 80
Level Cascade’s first artifact to as high as 80 for full quest credit. - Cascade glyph levels — MAX 150
Raise Cascade’s glyphs; a total of 150 levels count. - Upgrade any hero’s skin — MAX 150
Improve skins across your roster (not just Cascade). Up to 150 levels are counted. - Unlock an Ascension glyph in the Ascension Spire — MAX 30
Open Ascension glyphs; up to 30 unlocks count. - Total ability levels for Cascade — MAX 400
Level Cascade’s skills; a combined total of 400 levels is tracked.
Event Frame & Avatars
The Cascade Event includes cosmetic rewards you can keep forever. Unlock a unique profile frame and a set of themed avatars to show you participated in the Cascade Event.
Frame
Avatars
Pick your favorite and equip it once you unlock it during the Cascade Event.
For more details about the heroes and lore behind the Cascade Event, you can also visit the official Hero Wars Universe page. Check out Hero Wars Calendar for upcoming events. If you missed your reward check out Hero Wars Free Gift. For Pet Adventure check out Hero Wars Adventure
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