Remus Lupin, Beastial

Whenever this creature transforms into Remus Lupin, Beastial, discard your hand.
If you would draw a card, instead put a hunger counter on Remus Lupin, Beastial, and each opponent discards a card.
Wolves and werewolves you control get +X/+X and have trample, where X is the number of hunger counters on Remus Lupin, Beastial.
At the beginning of each upkeep, if no spells
were cast last turn, transform Remus Lupin, Beastial.