Chains of Mephistopheles

If a player would draw a card except the first one
they draw in their draw step each turn, that player
discards a card instead. If the player discards a
card this way, they draw a card. If the player
doesn't discard a card this way, they put the top
card of their library into their graveyard.
Chains of habit are too light to be felt until they are
too heavy to be broken.