Myr Reservoir (SOM) from Scars of Mirrodin, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Jung Park
• Card Text:
  T: Add 2 to your mana pool. Spend this mana only to cast Myr spells or activate abilities of Myr.
  3, T: Return target Myr card from your graveyard to your hand.