Jungle Morass

Graft 2 (This land enters the battlefield with two +1/+1 counters on it. Whenever a creature enters the battlefield, you may move a +1/+1 counter from this land onto it.)

{t}: Add {u},{b}, or {g} to your our mana pool. Activate this ability only during a Mana Surge.

(This card is put into play at the beginning of the game, tapped and under your control. You may only have one Arena at a time.)