Pelt Collector (GRN) from Guilds of Ravnica, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Zoltan Boros
• Card Text:
  Whenever another creature you control enters the battlefield or dies, if that creature's power is greater than Pelt Collector's, put a +1/+1 counter on Pelt Collector.
  As long as Pelt Collector has three or more +1/+1 counters on it, it has trample.