Arcbound Wanderer (5DN) from Fifth Dawn, available at 401 Games Canada.

• Rarity: Uncommon
• Finish: Normal
• Artist: Christopher Moeller
• Card Text:
  Modular—Sunburst (This comes into play with a +1/+1 counter on it for each color of mana used to pay its cost. When it’s put into a graveyard, you may put its
  +1/+1 counters on target artifact creature.)