Furious Spinesplitter

Trample
At the beginning of your end step, put a +1/+1 counter on this creature for each opponent who was dealt damage this turn.

Gruul Guildgate

This land enters tapped.
{T}: Add {R} or {G}.

Thriving Bluff

This land enters tapped. As it enters, choose a color other than red.
{T}: Add {R} or one mana of the chosen color.

Clan Defiance

Choose one or more —
• Clan Defiance deals X damage to target creature with flying.
• Clan Defiance deals X damage to target creature without flying.
• Clan Defiance deals X damage to target player or planeswalker.

Shiny Impetus

Enchant creature
Enchanted creature gets +2/+2 and is goaded. (It attacks each combat if able and attacks a player other than you if able.)
Whenever enchanted creature attacks, you create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

Gravel-Hide Goblin

{3}{G}: This creature gets +2/+2 until end of turn.

Gruul Turf

This land enters tapped.
When this land enters, return a land you control to its owner's hand.
{T}: Add {R}{G}.

Ripscale Predator

Menace (This creature can't be blocked except by two or more creatures.)

Stormblood Berserker

Bloodthirst 2 (If an opponent was dealt damage this turn, this creature enters with two +1/+1 counters on it.)
Menace (This creature can't be blocked except by two or more creatures.)

Firespout

Firespout deals 3 damage to each creature without flying if {R} was spent to cast this spell and 3 damage to each creature with flying if {G} was spent to cast this spell. (Do both if {R}{G} was spent.)

Mountain

Chainwhip Cyclops

{3}{R}: Target creature can't block this turn.

Gruul Signet

Pyrewild Shaman

Bloodrush — {1}{R}, Discard this card: Target attacking creature gets +3/+1 until end of turn.
Whenever one or more creatures you control deal combat damage to a player, if this card is in your graveyard, you may pay {3}. If you do, return this card to your hand.

Turret Ogre

Reach (This creature can block creatures with flying.)
When this creature enters, if you control another creature with power 4 or greater, this creature deals 2 damage to each opponent.

Herald of Ilharg

Trample
Whenever you cast a creature spell, put two +1/+1 counters on this creature. If that spell has mana value 5 or greater, this creature deals damage equal to the number of counters on it to each opponent.