Dothraki Blood Raider: Must be trained by current Blood Raider

+2 to attacks and damage while riding a horse.

Dorne Sand Spear: Must be trained by Sand Spear

+2 to attack and damage when using weapon finesse with a Spear.

Lannister Lion Calvary: Must be trained by Lion Cavalrymen.

+2 to attack and damage when using a lance and a calvary charge.