
Brood Keeper | Creature | Human Shaman | Whenever an Aura becomes attached to Brood Keeper, create a 2/2 red Dragon creature token with flying. It has "{R}: This creature gets +1/+0 until end of turn." | Scott Murphy

Kird Chieftain | Creature | Ape | Kird Chieftain gets +1/+1 as long as you control a Forest.
{4}{G}: Target creature gets +2/+2 and gains trample until end of turn. (It can deal excess combat damage to the player or planeswalker it's attacking.) | Lars Grant-West

Kurkesh, Onakke Ancient | Legendary Creature | Ogre Spirit | Whenever you activate an ability of an artifact, if it isn't a mana ability, you may pay {R}. If you do, copy that ability. You may choose new targets for the copy. | Slawomir Maniak

Paragon of Fierce Defiance | Creature | Human Warrior | Other red creatures you control get +1/+1.
{R}, {T}: Another target red creature you control gains haste until end of turn. (It can attack and {T} this turn.) | Slawomir Maniak

Scrapyard Mongrel | Creature | Dog | As long as you control an artifact, Scrapyard Mongrel gets +2/+0 and has trample. (It can deal excess combat damage to the player or planeswalker it's attacking.) | Svetlin Velinov