Thundersaurus

Dinosaurs you control have Haste and Trample
Whenever a nontoken dinosaur enters the battlefield under your control, create a 3/3 green Dinosaur creature token with Trample.
Whenever a token dinosaur creature enters the battlefield under your control, you may have Thundersaurus deal 1 damage to any target. If
you do, add your choice of {r} or {g} to your mana
pool.