Brackwater Elemental (CON) from Conflux, available at 401 Games Canada.

• Rarity: Common
• Finish: Normal
• Artist: Thomas M. Baxa
• Card Text:
  When Brackwater Elemental attacks or blocks, sacrifice it at end of turn.
  Unearth 2U (2U: Return this card from your graveyard to play. It gains haste. Remove it from the game at end of turn or if it would leave play. Unearth only as a sorcery.)