The First Sliver (Retro) [Modern Horizons] Sigture Spellbooks Take an extra turn after

Take an extra turn after this one if an opponent cast a blue spell this turn

instead that source deals that much damage to you and Eye for an Eye deals that much damage to that source's controller

Return Recurring Nightmare to its owner's hand: Return target creature card from your graveyard to the battlefield

but its power was unmistakable

The First Sliver (Retro) [Modern Horizons] Sigture Spellbooks Take an extra turn afterSet: 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.