Dwarven Centurion

Trample, Reach
Whenever Dwarven Centurion deals combat
damage to a player, you may discard an artifact
card. if you do, Dwarven Centurion deals damage
equal to that card's mana value to target creature
or planeswalker.
"That's a Dwarven Centurion; it's very strong, and
very deadly."
—Karliah, Betrayed Thief