Ancient Imperiosaur (PMOM 174p)

Creature — Dinosaur • Mana cost: {5}{G}{G} • March of the Machine Promos • Rare

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)
Trample, ward {2}
This creature enters with two +1/+1 counters on it for each creature that convoked it.

Illustrated by Piotr Foksowicz.