Grizzly Bears

Blood Lust

If target creature has toughness 5 or greater, it gets +4/-4 until end of turn. Otherwise, it gets +4/-X until end of turn, where X is its toughness minus 1.

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.

Mountain

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Goblin Balloon Brigade

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

Kird Ape

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

Scryb Sprites

Tawnos's Weaponry

You may choose not to untap Tawnos's Weaponry during your untap step.
{2}, {T}: Target creature gets +1/+1 for as long as Tawnos's Weaponry remains tapped.

Llanowar Elves

Giant Growth

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

Forest

Dwarven Warriors

{T}: Target creature with power 2 or less can't be blocked this turn.