Frigid Chevalier

When Frigid Chevalier deals combat damage to a creature, tap that creature. It doesn't untap during its controllers next untap step.
When Frigid Chevalier deals combat damage to a player, put the top card of that player's library into their graveyard.
"The Kraken is as dangerous as it is predictable. But it has been purged from my waters and for that, I am grateful.