SCP-173, The Original

Indestructible, Deathtouch.
SCP-173, The Original enters the battlefield
with three sight counters on it.
SCP-173, The Original cannot attack as long as
it has one or more sight counters on it.
At the beginning of your upkeep, remove a sight
counter from SCP-173, The Original.
If SCP-173, The Original deals combat damage
to a player, that player loses the game.
"Blinking!"