prototype mtg cards 1x Arcbound | FOIL | Modern Horizons 2 | Magic you may put its +1/+1 counters on target artifact creature.) Calvin on an early prototype

Notably, Dour Port-Mage also triggers if your creatures get exiled directly from the battlefield, whether that's with your own blink effect, or with an opponent's exile removal like Banishing Light

(2017-08-25) Gaining protection from everything causes a spell or ability on the stack to have an illegal target if it targets you

That said, this isnt Guilds of Ravnica

How about selling on TCGplayer before then

Kains almost-comical ability to be forced into betraying you is delightfully woven into Magic with his card, Kain, Traitorous Dragoonwhenever Kain does damage to another player, they can choose to take control of him and he does mirrored damage to his original owner, meaning that Kain can bounce back and forth between ownership over the course of the game