Warg Kennel

Beast Mastery - Orc creatures you control gain +1 attack while Warg kennel is on the battlefield.
Summon Raider {4} -Once per turn, summon a Raider to the battlefield.
"Home to the ferocious Wargs, the Kennel breeds and trains these savage beasts to serve as mounts and companions to Orcish warriors, their primal fury unleashed upon the enemies of the horde."