Loki Prime, The Betrayer

Ward — Pay 3 life.

Decoy — If a creature with toughness 3 or less died during your turn, return it to the return it to the battlefield under your control, it's a 2/2 Black artifact creature named Decoy and loses all other abilities.

Switch Teleport — Whenever Loki attacks, exchange it's toughness with target creature until
end of turn.