Prolonged Struggle sucks.
I would start Denthor and Merry if you want to run
Shadowplay, but with enough possessions and Denethor it might be too much. Instead of
Shadowplay put in
Unheeded to finish of minions in the Maneuver phase with Merry.
In fact I would drop Gandalf altogether, put in
Thorongil and his Bow,
Hardy Garrison and Shirrif-#$&*@! Robin for mad cycling and wounding. Another

companion to bear possessions for Denethor as well.
Home and Hearth is a better burden removal option in my mind. If you want a little extra skirmish wounding throw in
Dernhelm's Blade and
Surrendered Weapons, discard each time you move and replay with Merry.