
Bloodfire Enforcers | Creature | Human Monk | Bloodfire Enforcers has first strike and trample as long as an instant card and a sorcery card are in your graveyard. | Yefim Kligerman

Heart-Piercer Manticore | Creature | Manticore | When Heart-Piercer Manticore enters, you may sacrifice another creature. When you do, Heart-Piercer Manticore deals damage equal to that creature's power to any target.
Embalm {5}{R} ({5}{R}, Exile this card from your graveyard: Create a token that's a copy of it, except it's a white Zombie Manticore with no mana cost. Embalm only as a sorcery.) | Scott Murphy

Labyrinth Champion | Creature | Human Warrior | Heroic — Whenever you cast a spell that targets Labyrinth Champion, Labyrinth Champion deals 2 damage to any target. | Chase Stone

Outpost Siege | Enchantment | | As Outpost Siege enters, choose Khans or Dragons.
• Khans — At the beginning of your upkeep, exile the top card of your library. Until end of turn, you may play that card.
• Dragons — Whenever a creature you control leaves the battlefield, Outpost Siege deals 1 damage to any target. | Daarken

Pia and Kiran Nalaar | Legendary Creature | Human Artificer | When Pia and Kiran Nalaar enters, create two 1/1 colorless Thopter artifact creature tokens with flying.
{2}{R}, Sacrifice an artifact: Pia and Kiran Nalaar deals 2 damage to any target. | Eric Deschamps

Purphoros's Emissary | Enchantment Creature | Ox | Bestow {6}{R} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.)
Menace (This creature can't be blocked except by two or more creatures.)
Enchanted creature gets +3/+3 and has menace. | Sam Burley

Fanatic of Mogis | Creature | Minotaur Shaman | When Fanatic of Mogis enters, it deals damage to each opponent equal to your devotion to red. (Each {R} in the mana costs of permanents you control counts toward your devotion to red.) | Matt Stewart

Purphoros, God of the Forge | Legendary Enchantment Creature | God | Indestructible
As long as your devotion to red is less than five, Purphoros isn't a creature.
Whenever another creature you control enters, Purphoros deals 2 damage to each opponent.
{2}{R}: Creatures you control get +1/+0 until end of turn. | Eric Deschamps

Pyromancer's Assault | Enchantment | | Whenever you cast your second spell each turn, Pyromancer's Assault deals 2 damage to any target. | Todd Lockwood

Goblin Heelcutter | Creature | Goblin Berserker | Whenever Goblin Heelcutter attacks, target creature can't block this turn.
Dash {2}{R} (You may cast this spell for its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand at the beginning of the next end step.) | Jesper Ejsing

Limits of Solidarity | Sorcery | | Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn.
Cycling {2} ({2}, Discard this card: Draw a card.) | Craig J Spearing

Iroas, God of Victory | Legendary Enchantment Creature | God | Indestructible
As long as your devotion to red and white is less than seven, Iroas isn't a creature.
Creatures you control have menace.
Prevent all damage that would be dealt to attacking creatures you control. | Slawomir Maniak

Steam Augury | Instant | | Reveal the top five cards of your library and separate them into two piles. An opponent chooses one of those piles. Put that pile into your hand and the other into your graveyard. | Dave Kendall

Mogis, God of Slaughter | Legendary Enchantment Creature | God | Indestructible
As long as your devotion to black and red is less than seven, Mogis isn't a creature.
At the beginning of each opponent's upkeep, Mogis deals 2 damage to that player unless they sacrifice a creature of their choice. | Chase Stone

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

Zendikar Incarnate | Creature | Elemental | Zendikar Incarnate's power is equal to the number of lands you control. | Lucas Graciano

Rubblebelt Raiders | Creature | Human Warrior | Whenever Rubblebelt Raiders attacks, put a +1/+1 counter on it for each attacking creature you control. | Chippy

Xenagos, the Reveler | Legendary Planeswalker | Xenagos | +1: Add X mana in any combination of {R} and/or {G}, where X is the number of creatures you control.
0: Create a 2/2 red and green Satyr creature token with haste.
−6: Exile the top seven cards of your library. You may put any number of creature and/or land cards from among them onto the battlefield. | Jason Chan