Yeah I can see using these guys as speed bumps for the enemy but they are very very fragile, as I found out the hard way. Though their Dulliams (think I got the name right) spell can be a life saver. I keep a 13 in my hand especially for this and when I already have Pandora's spell up on the target for the negative flip on WP duels. The sorrow is most likely already in range and all you do then is just flip, see if you get lucky and get it off from the flip, if not cheat with the 13 and boom! 1 damage from pandora's ability and they are now paralyzed. This is going to be a constant tactic for me with them.
I never thought of linking them to an enemy model... it's so... fiendish and yet... I love it so much! I can see doing this to someone like Rasputina and hosing her down with her own AE spells and cackling madly as you force WP test after WP test on her.
These guys were made for pandora, guess thats why they are in her box heh. They are easily overlooked at first to, especially if the enemy doesn't realize that Pandora wants to set up a web of WP duels and then force you into a lock down situation.