Lattice Library (SOC-040) - Commander: Secrets of Strixhaven

This enchantment enters with X study counters on it.

When this enchantment enters and whenever you cast your first spell with x in its mana cost each turn, create a 0/0 green and blue Fractal creature token. Put a number of +1/+1 counters on it equal to the number of study counters on this enchantment.