+Masumaro (2)
At the beginning of your upkeep, put a +1/+1 counter on Descendant of Masumaro for each card in your hand, then remove a +1/+1 counter from Descendant of Masumaro for each card in target opponent's hand.
Masumaro, First to Live's power and toughness are each equal to twice the number of cards in your hand.
Gatherer works better in the Companion app!