Drake, Black Dragon Aspect

Deathtouch
When Drake enters the battlefield create a 4/4
blue Oni Zombie creature token named
Buttercup with menace.
As long as you control a creature named
Buttercup, Drake has indestructible.
{3}{b}{b} :Until end of turn, Drake becomes a
dragon with base power and toughness 5/5,
loses all other abilities, and gains flying.