[kianduatha]

If you want to deal with those Ettins...if they're not shock immune then something like Orb Lightning will still do terrible things to them. Also a few mages spamming Fireball will fell them relatively quickly from the fatigue alone. Some blockers and then a handful of guys with Heroic Blades would do nicely as well.

Notice that all these options take far fewer gems than the actual Ettins.