Shared madness

At the beginning of each upkeep step each player
Deludes 1 (look at the top card of your library. You
may put it face down as 2/2 colorless delusion
creature.)
At the beginning of each end step each
player discards their hand.
"How do you know I'm mad?" said Alice.
"You must be," said the Cat, "or you wouldn't have
come here."