Newry Mill

Newry Mill enters the battlefield tapped.
{t} Add {b} or {g} to your mana pool. Put an overgrowth counter on Newry Mill.
{t} Remove three overgrowth counters from
Newry Mill and sacrifice it. Put a 5/5 black
and green elemental land creature token with
"{t} Add {b}{g} to your mana pool" into the battlefield.