Everflowing Chalice (DDF) from Duel Decks: Elspeth vs. Tezzeret, available at 401 Games Canada.

• Rarity: Uncommon
• Finish: Normal
• Artist: Steve Argyle
• Card Text:
  Multikicker 2 (You may pay an additional 2 any number of times as you cast this spell.)
  Everflowing Chalice enters the battlefield with a charge counter on it for each time it was kicked.
  T: Add 1 to your mana pool for each charge counter on Everflowing Chalice.