Disciple of the Old Ways

{R}: Disciple of the Old Ways gains first strike until end of turn.

Pitchburn Devils

When Pitchburn Devils dies, it deals 3 damage to any target.

Marauding Maulhorn

Marauding Maulhorn attacks each combat if able unless you control a creature named Advocate of the Beast.

Gruul War Chant

Attacking creatures you control get +1/+0 and have menace.

Cobblebrute

Flames of the Firebrand

Flames of the Firebrand deals 3 damage divided as you choose among one, two, or three targets.

Lava Axe

Lava Axe deals 5 damage to target player or planeswalker.

Annihilating Fire

Annihilating Fire deals 3 damage to any target. If a creature dealt damage this way would die this turn, exile it instead.

Rumbling Baloth

Mountain

Rootbound Crag

Rootbound Crag enters the battlefield tapped unless you control a Mountain or a Forest.
{T}: Add {R} or {G}.

Advocate of the Beast

At the beginning of your end step, put a +1/+1 counter on target Beast creature you control.

Giant Growth

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

Forest

Guttersnipe

Whenever you cast an instant or sorcery spell, Guttersnipe deals 2 damage to each opponent.

Ghor-Clan Rampager

Trample
Bloodrush — {R}{G}, Discard Ghor-Clan Rampager: Target attacking creature gets +4/+4 and gains trample until end of turn.

Seismic Stomp

Creatures without flying can't block this turn.

Tenement Crasher

Fireshrieker

Equipped creature has double strike. (It deals both first-strike and regular combat damage.)
Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)

Skarrg Guildmage

{R}{G}: Creatures you control gain trample until end of turn.
{1}{R}{G}: Target land you control becomes a 4/4 Elemental creature until end of turn. It's still a land.

Hunt the Weak

Put a +1/+1 counter on target creature you control. Then that creature fights target creature you don't control. (Each deals damage equal to its power to the other.)

Chandra's Outrage

Chandra's Outrage deals 4 damage to target creature and 2 damage to that creature's controller.

Massive Raid

Massive Raid deals damage to any target equal to the number of creatures you control.

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.)

Slaughterhorn

Bloodrush — {G}, Discard Slaughterhorn: Target attacking creature gets +3/+2 until end of turn.

Chandra's Phoenix

Flying
Haste (This creature can attack and {T} as soon as it comes under your control.)
Whenever an opponent is dealt damage by a red instant or sorcery spell you control or by a red planeswalker you control, return Chandra's Phoenix from your graveyard to your hand.

Regathan Firecat

Ring of Valkas

Equipped creature has haste. (It can attack and {T} no matter when it came under your control.)
At the beginning of your upkeep, put a +1/+1 counter on equipped creature if it's red.
Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Canyon Minotaur

Axebane Stag

Centaur Courser

Cyclops Tyrant

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)
Cyclops Tyrant can't block creatures with power 2 or less.

Shock

Transguild Promenade

Transguild Promenade enters the battlefield tapped.
When Transguild Promenade enters the battlefield, sacrifice it unless you pay {1}.
{T}: Add one mana of any color.

Zhur-Taa Swine

Bloodrush — {1}{R}{G}, Discard Zhur-Taa Swine: Target attacking creature gets +5/+4 until end of turn.