Gendrome

Spend only mana produced by Deserts to cast this spell.

When Gendrome deals combat damage to another
creature, put a stun counter on that creature.

Whenever a Desert enters the battlefield under your
control, you may pay {2} (Spend only mana produced by
Deserts). If you do, create a 1/1 colorless Dinosaur
Genprey creature token with: "when this creature deals
combat damage to another creature, put a stun counter on
that creature".