Forest

Wall of Stone

Rod of Ruin

{3}, {T}: Rod of Ruin deals 1 damage to any target.

Obsianus Golem

Channel

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

Llanowar Elves

Shanodin Dryads

Forestwalk (This creature can't be blocked as long as defending player controls a Forest.)

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.

Hurloon Minotaur

Tropical Island

Scryb Sprites

Dwarven Demolition Team

Giant Spider

Reach (This creature can block creatures with flying.)

Granite Gargoyle

Flying
{R}: Granite Gargoyle gets +0/+1 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.

Goblin Balloon Brigade

{R}: Goblin Balloon Brigade gains flying until end of turn.

Rock Hydra

Rock Hydra enters with X +1/+1 counters on it.
For each 1 damage that would be dealt to Rock Hydra, if it has a +1/+1 counter on it, remove a +1/+1 counter from it and prevent that 1 damage.
{R}: Prevent the next 1 damage that would be dealt to Rock Hydra this turn.
{R}{R}{R}: Put a +1/+1 counter on Rock Hydra. Activate only during your upkeep.

Giant Growth

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

Juggernaut

Juggernaut attacks each combat if able.
Juggernaut can't be blocked by Walls.

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.

Regeneration

Enchant creature (Target a creature as you cast this. This card enters attached to that creature.)
{G}: Regenerate enchanted creature. (The next time that creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)