Rider of the Mark
Road to Rivendell #33 (x3)
Sprzymierzeniec
[3] 2 1 1 2
Rohan.  

Action: Spend 1 resource to give control of Rider of the Mark to another player. (Limit once per round.)

Response: After Rider of the Mark changes control, discard a shadow card dealt to an enemy you are engaged with.