Easterling Horse
A Shadow in the East#19 (x3)
Treachery
While attached to an enemy, counts as a Mount attachment with the text: "Attached enemy gets +2 . Forced: At the end of the round, return attached enemy to the staging area."

When Revealed: Attach to the lowest engagement cost Easterling enemy without an Easterling Horse and return it to the staging area. Otherwise, Easterling Horse gains surge.