Inevitable Betrayal (Retro) [Modern Horizons 2] SPA Polvo de protomateria sacrifice it unless {R} was

sacrifice it unless {R} was spent to cast it

Changelings can alter shape based on what the beings around them desire most

) Each creature you control with the chosen name enters the battlefield with an additional +1/+1 counter on it

We can do it

Inevitable Betrayal (Retro) [Modern Horizons 2] SPA Polvo de protomateria sacrifice it unless {R} wasSet: Modern Horizons 2 Type: Sorcery Rarity: Rare Suspend 3{1}{U}{U} (Rather than cast this card from your hand, pay {1}{U}{U} and exile it with three time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, cast it without paying its mana cost.) Search target opponent's library for a creature card and put that card onto the battlefield under your control. Then that player shuffles.