Umlindi the Unseen

Shroud, Reach, Unblockable
{2}{u}{t} target creature cannot be blocked this turn
{2}{u}{u} look at the top two cards of target player's library
Whenever Umlindi the Unseen deals combat damage to a player, that player puts the top two cards of their library into their graveyard.
"There are three ways to remain unseen; never be seen, remove all memory of being seen, or leave no witnesses at all."