Deekah, Fractal Theorist [193] [Secrets of Strixhaven: Commander] [Non-Foil]

Magecraft — Whenever you cast or copy an instant or sorcery spell, create a 0/0 green and blue Fractal creature token. Put X +1/+1 counters on it, where X is that spell's mana value. {3}{U}: Target creature token can't be blocked this turn.