Child of Gaea

Trample
At the beginning of your upkeep, sacrifice Child of Gaea unless you pay {G}{G}.
{1}{G}: Regenerate Child of Gaea.

Llanowar Elves

Rhox

You may have Rhox assign its combat damage as though it weren't blocked.
{2}{G}: Regenerate Rhox. (The next time this creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

Pride of Lions

You may have Pride of Lions assign its combat damage as though it weren't blocked.

Birds of Paradise

Thorn Elemental

You may have Thorn Elemental assign its combat damage as though it weren't blocked.

Fyndhorn Elder

Centaur Glade

{2}{G}{G}: Create a 3/3 green Centaur creature token.

Forest

Overgrowth

Enchant land
Whenever enchanted land is tapped for mana, its controller adds an additional {G}{G}.

Wild Growth

Enchant land
Whenever enchanted land is tapped for mana, its controller adds an additional {G}.

Collective Unconscious

Draw a card for each creature you control.

Moment's Peace

Prevent all combat damage that would be dealt this turn.
Flashback {2}{G} (You may cast this card from your graveyard for its flashback cost. Then exile it.)