Zaxara, the Exemplary 176 (Commander: Dominaria United)

Deathtouch {T}: Add two mana of any one color. Whenever you cast a spell with {X} in its mana cost, create a 0/0 green Hydra creature token, then put X +1/+1 counters on it.

NM - $4.60
LP - $3.70
MP - $2.80
HP - $2.20
DMG - $2.20