Stone-Grove Colossus

Trample, lifelink
When Stone-Grove Colossus dies, create eight
1/1 green Saproling creature tokens and add {w}{w}{w}{g}{g}{g}{g}{g} to your mana pool. This mana doesn't empty from your mana pool as steps, phases, and turns end.
{10}{w}{w}{w}{g}{g}{g}{g}{g}: Lands you control become 5/5 Elemental creatures with trample and lifelink. They're still lands.