The Reaper Perk is an Advanced Perk, and as such, it is more difficult to obtain and only a few can be attached to a dragon.
Attaching a Reaper Perk to your dragon means that it will deal damage to an opponent revived by a Phoenix Perk. The Reaper Perk is triggered when an opponent is revived by a Phoenix Perk.
When attached to your dragon, the Reaper Perk will target the revived opponent dragon and remove 3% of its maximum life points for each Reaper Perk attached.
The Reaper Perk can be triggered multiple times but won’t be activated if the dragon it is attached to is on the bench.
More attached Reaper Perks means more damage dealt.