Action: A Challenge for Heroes
You declare an enemy within 60 feet to be a heroic test. For 1 minute, that enemy deals an additional 10 spirit damage to you with each successful Strike or spell it targets you with.
Effect: A Challenge For Heroes (Enemy)
Whenever that enemy deals spirit damage to you, each ally who has the enemy in melee reach can attempt a Reactive Strike against it, even if the ally doesn't normally have that reaction. If an ally successfully slays the enemy with a Reactive Strike due to this effect, that ally immediately gains temporary Hit Points equal to your level, which persist for 1 minute.