Enchanting Drain

Enchanting Drain: Whenever Incubus and Succubus enter the battlefield, they unleash a beguiling charm. The 1st time they attack, charm 1 target creature. The 5th time they attack, enchant 5 target creatures with a spellbinding gaze. Each enchantment or charm effect enhances their power, granting them +3/+3 until end of turn.