Goblin Rabblemaster (J25) from Foundations Jumpstart, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Svetlin Velinov
• Card Text:
  Other Goblin creatures you control attack each combat if able.
  At the beginning of combat on your turn, create a 1/1 red Goblin creature token with haste.
  Whenever Goblin Rabblemaster attacks, it gets +1/+0 until end of turn for each other attacking Goblin.