Erratic Odiyan

Changeling (This card is every creature type.)
When Erratic Odiyan blocks or becomes blocked, flip a coin. If heads, it becomes a 3/1 with lifelink until end of combat. If tails, it becomes a 1/3 with deathtouch until end of combat.
If Erratic Odiyan is in your graveyard with 2 or more cards above it, you may sacrifice a permanent to return it to play.