Knight of Entropy

Haste, menace
When Knight of Entropy enters the battlefield,
each player discards a card. Any player who can't
loses 3 life.
Pact—Sacrifice a creature and an artifact: Create
a token that is a copy of Knight of Entropy (To activate a pact ability, pay the pact cost while this
card is exiled face-up, then flip it face-down. Do this
only any time you could cast a sorcery).