Arcbound Tracker (MH2 112)

Artifact Creature — Dog • Mana cost: {2}{R} • Modern Horizons 2 • Common

Menace
Modular 2 (This creature enters with two +1/+1 counters on it. When it dies, you may put its +1/+1 counters on target artifact creature.)
Whenever you cast a spell other than your first spell each turn, put a +1/+1 counter on this creature.

Illustrated by Campbell White.