Zaxara, the Exemplary

Zaxara, the Exemplary

Legendary Creature — Nightmare Hydra · {1}{B}{G}{U}

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.