Arcbound Tracker (MH2) from Modern Horizons 2, available at 401 Games Canada.

• Rarity: Common
• Finish: Normal
• Artist: Campbell White
• Card Text:
  Menace
  Modular 2 (This creature enters the battlefield 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 Arcbound Tracker.