Channel

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

Grizzly Bears

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Hurricane

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

Kird Ape

Kird Ape gets +1/+2 as long as you control a Forest.

Timber Wolves

Banding (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are blocking or being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

Taiga

Mountain

Forest

Regrowth

Return target card from your graveyard to your hand.

Giant Growth

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

Disintegrate

Disintegrate deals X damage to any target. If it's a creature, it can't be regenerated this turn, and if it would die this turn, exile it instead.

Fireball

This spell costs {1} more to cast for each target beyond the first.
Fireball deals X damage divided evenly, rounded down, among any number of targets.