Faith Seed

Hexproof
At the start of your turn, Grant 1 enemy creature a Butterfly token.

Faith's Angels: All Angel tokens gain +1/+1
when I'm on the field.

{4}{g}{g}A Leap of Faith: Flip a coin for every
creature with a Butterfly token. If heads, the creature
survives and loses the Butterfly token. If tails, the
creature becomes an Angel and joins you.