The First Sliver (Retro) [Modern Horizons] S2 Before the Sun Empire was

Before the Sun Empire was born

instead exile that card and create a 2/2 black Zombie creature token

during either player's turn: You can detach 1 Xyz Material from this card to target 1 card on the field

It is imperative that its maker be found

Search your library for a creature card with mana value X or less

The First Sliver (Retro) [Modern Horizons] S2 Before the Sun Empire wasSet: Modern Horizons Type: Legendary Creature Sliver Rarity: Mythic Cost: {W}{U}{B}{R}{G} Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom of your library in a random order.) Sliver spells you cast have cascade. A humble appearance belies a master's skill.