Sykaldir, Brother of Trickery

Indestructible, Faith(This creature can't attack or
block unless your total devotion is 10.)
Whenever you draw a card, target player puts the
top card of their library into their graveyard.
Whenever an opponent has more cards in their graveyard than any other player, at the beginning
of their upkeep, that player puts the top card of
their library into their graveyard.
Fond of revels and lusts for calamity.