Hero Wars Fafnir

Fafnir targets a random ally and begins using his basic attacks to forge a Runic Shield for them. Its durability increases with each hit. The shield activates if the target hero takes damage that lowers their health to below 25%. The shield absorbs any damage when active.
The Runic Shield protects the target ally from lethal damage once per battle.
Heroes with the Agility main stat are prioritized when selecting an ally.
Shield durability with each hit: 24,486. (30% physical attack + 1,300)
Max 248,215 (250% physical attack + 52,000 + 3,000)

Enchants the weapon wielded by the ally Fafnir is forging a Runic Shield for, increasing damage from their physical attacks for 8s.
Extra damage: 34,164 (40% physical attack + 3,250)

When an allied hero stuns an enemy, Fafnir casts a Knowledge of Flaws Seal on them for 10s, boosting their armor penetration stat. When the hero stuns an enemy again, the Seal duration is reset. The armor penetration bonus stacks up to 5 times.
Armor penetration bonus for 1 stun: 5,305 (3.5% physical attack + 2,600)