How do I kill a water queen with a medusa shield?

[Argitoth]

You know what, the water queen was alive for so long with that medusa shield. I didn't want to take any risk of routing or other unseen misfortune so I only teleported in a single mage. Also, I was doing other things and I didn't have available another mage with teleport. However, when I teleported him in to kill the earth king with the same technique, I DID teleport in a second mage to pickup items. Guess what? He got nothing from the king. He did have a unique item on him too, and was fully equipped. That was lame. Maybe the chance of picking up an item increases if you are NEAR the enemy units.

Well, to let you know, the enemy has resummoned the queen and now has a small army with her. It doesn't matter though, my allie has the medusa shield on a unit that is more powerful than the water queen could ever be. lol I'll post a screenshot soon. Hint: It has about 80 regeneration and quickness.