"An undead wizard named Yisarn lurks in the sanctuary. He has allied himself with the Daggerburg goblins, our hated enemies. Defeating him would be a great service to us."

Tactics

Yisarn begins the fight with mage armor already cast. He will use the goblin corpses to harass spellcasters in the group and take attention off himself where he can.

If he's engaged in melee, he'll cast shocking grasp on his target, and if successful will simply move away behind cover. If it fails, he'll use misty step to stay at range.

When his health gets low, he'll use enervation to heal up. If it looks like he will lose the fight, he'll begin casting dimension door to get away, but think better of it. Any characters with spellcasting can identify this spell. On his next turn, he will cast the spell and disappear out of the Sanctuary to make his escape!

Yisarn has taken over the Eladrin Sanctuary in the Harken Forest. This is an ancient place of power, and Yisarn is feeding on this to fuel his dark experiments.

Lair Actions

On initiative count 20 (losing initiative ties), Yisarn can take a lair action to cause one of the following magical effects:

• Yisarn animates the goblin corpses in the antechamber as though he had cast danse macabre. They come to life as skeletons rather than zombies. This does not count as a concentration spell for him, however he cannot cast it again.
• Yisarn casts the false life spell. If he chooses to cast it at 2nd level or higher, he cannot use this action on the next round.
• Yisarn attempts to bolster his magical power by drawing from the Sanctuary. Roll a d12. Ysarn gets back a spell slot for the level equal to the result; if the result is 6 or greater, or he already has all of his slots for that level, he curses in frustration as nothing happens.