Angelic Cub (J25) from Foundations Jumpstart, available at 401 Games Canada.

• Rarity: Uncommon
• Finish: Normal
• Artist: Miranda Meeks
• Card Text:
  Whenever Angelic Cub becomes the target of a spell or ability for the first time each turn, put a +1/+1 counter on it.
  As long as Angelic Cub has three or more +1/+1 counters on it, it has flying.