Winter Orb

As long as Winter Orb is untapped, players can't untap more than one land during their untap steps.

Forest

Regrowth

Return target card from your graveyard to your hand.

Giant Growth

Target creature gets +3/+3 until end of turn.

Scryb Sprites

Channel

Until end of turn, any time you could activate a mana ability, you may pay 1 life. If you do, add {C}.

Aspect of Wolf

Enchant creature
Enchanted creature gets +X/+Y, where X is half the number of Forests you control, rounded down, and Y is half the number of Forests you control, rounded up.

Hurricane

Hurricane deals X damage to each creature with flying and each player.