The Great Pumpkin

Flying, menace
When The Great Pumpkin enters the battlefield,
return a creature you control to your hand, then
ask each opponent if they believe in the Great
Pumpkin. When an opponent says they believe,
put two +1/+1 counters on The Great Pumpkin,
and put a Treasure token onto the battlefield
under that player's control. When an opponent
says they don't believe, draw a card.