Kayle, the Righteous

{1}{r/w}: If Kayle is a warrior, it becomes a
Warrior Angel with base power and toughness
3/4 and Flying.

{2}{w}{w}: If Kayle is an Angel, it becomes an Warrior Angel God with base power and toughness 4/7 and Indestructible. And gains "Creatures attacking your opponents gain
Double Strike until end of turn."