Magnus’s RPG empire on the portal.

That was very reckless. The Necromancer sent skeletons after you. Of course, the mammoth turned some of them into bone meal, which made the Necromancer furious, and he let out a banshee scream, reducing your luck and morale by 1. He also cast some kind of spell on you, dealing -20 HP damage. But the mammoth didn't like the wailing Necromancers and charged at him. The Necromancer was forced to retreat to a corner and started muttering something evil. The skeleton archers are now attacking your mammoth, dealing 15 HP damage. What are your actions?