Overrun

Creatures you control get +3/+3 and gain trample until end of turn. (Each of those creatures can deal excess combat damage to the player or planeswalker it's attacking.)

Grappler Spider

Reach (This creature can block creatures with flying.)

Claws of Valakut

Enchant creature
Enchanted creature gets +1/+0 for each Mountain you control and has first strike.

Cunning Sparkmage

Haste
{T}: This creature deals 1 damage to any target.

Giant Spider

Terramorphic Expanse

{T}, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Skitter of Lizards

Multikicker {1}{R} (You may pay an additional {1}{R} any number of times as you cast this spell.)
Haste
This creature enters with a +1/+1 counter on it for each time it was kicked.

Gnarlid Pack

Multikicker {1}{G} (You may pay an additional {1}{G} any number of times as you cast this spell.)
This creature enters with a +1/+1 counter on it for each time it was kicked.

Wolfbriar Elemental

Multikicker {G} (You may pay an additional {G} any number of times as you cast this spell.)
When this creature enters, create a 2/2 green Wolf creature token for each time it was kicked.

Goblin Roughrider

Summit Apes

As long as you control a Mountain, this creature has menace. (It can't be blocked except by two or more creatures.)

Vastwood Zendikon

Enchant land
Enchanted land is a 6/4 green Elemental creature. It's still a land.
When enchanted land dies, return that card to its owner's hand.

Quest for Renewal

Whenever a creature you control becomes tapped, you may put a quest counter on this enchantment.
As long as there are four or more quest counters on this enchantment, untap all creatures you control during each other player's untap step.

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Giant Growth

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

Mountain

Kitesail

Equipped creature gets +1/+0 and has flying.
Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)

Comet Storm

Multikicker {1} (You may pay an additional {1} any number of times as you cast this spell.)
Choose any target, then choose another target for each time this spell was kicked. Comet Storm deals X damage to each of them.

Act of Treason

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. (It can attack and {T} this turn.)

Grotag Thrasher

Whenever this creature attacks, target creature can't block this turn.

Forest

Deathforge Shaman

Multikicker {R} (You may pay an additional {R} any number of times as you cast this spell.)
When this creature enters, it deals damage to target player or planeswalker equal to twice the number of times it was kicked.

Borderland Ranger

When this creature enters, you may search your library for a basic land card, reveal it, put it into your hand, then shuffle.

Feral Contest

Put a +1/+1 counter on target creature you control. Another target creature blocks it this turn if able.

Leatherback Baloth

Arbor Elf

Rumbling Aftershocks

Whenever you cast a kicked spell, you may have this enchantment deal damage to any target equal to the number of times that spell was kicked.

Canopy Cover

Enchant creature
Enchanted creature can't be blocked except by creatures with flying or reach.
Enchanted creature can't be the target of spells or abilities your opponents control.

Greenweaver Druid

Groundswell

Target creature gets +2/+2 until end of turn.
Landfall — If you had a land enter the battlefield under your control this turn, that creature gets +4/+4 until end of turn instead.

Terastodon

When this creature enters, you may destroy up to three target noncreature permanents. For each permanent put into a graveyard this way, its controller creates a 3/3 green Elephant creature token.

Stone Idol Trap

This spell costs {1} less to cast for each attacking creature.
Create a 6/12 colorless Construct artifact creature token with trample. Exile it at the beginning of your next end step.