Valki, God of Lies // Tibalt, Cosmic Impostor Condition:Excellent exchange ownership of that artifact

exchange ownership of that artifact and Timmerian Fiends

At the beginning of each opponent's draw step

Splitting Slime

return it to the battlefield under its owner's control with a +1/+1 counter on it

Valki, God of Lies // Tibalt, Cosmic Impostor Condition:Excellent exchange ownership of that artifactValki, God of Lies Legendary Creature God When Valki enters the battlefield, each opponent reveals their hand. For each opponent, exile a creature card they revealed this way until Valki leaves the battlefield. : Choose a creature card exiled with Valki with converted mana cost X. Valki becomes a copy of that card. Tibalt, Cosmic Impostor Legendary Planeswalker Tibalt As Tibalt enters the battlefield, you get an emblem with "You may play cards exiled