Santa, Father Christmas

+2: Flip a coin. If it's heads, put a +1/+1 counter on target creature you control. If it's tails, create a artifact treasure token.
+1: Up to two opponents gain X life, then either put X artifact treasure tokens or put X +1/+1 counters on target creature you control.
0: Santa, Father Christmas becomes a 1/6 creature with flying and lifelink, that's still a plainswalker until end of turn.