Ttharg Krixkrux

Ttharg snatches up the whip from the ground where the Overseer's body now lay smoking. As he turned, he spit a gobbet of blood onto the corpse.

Ttharg is bloodied.

He moved towards the Mage, and as he did so he called out once again to the storm raging in the centre of the room. A bolt of lightning struck out at the Mage, but she once again weaved herself out of the way of the worst of it.

Finally, Ttharg muttered a prayer for the group at large; with the exception of Servius who hadn't been hurt at all. "Bahamut, keep us strong and let us hold fast against our foe!"

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Free Action to pick up Constellation Whip.
Move Action to move towards Mage.
Main Action to use a Bolt from Call Lightning (concentration is still maintained). Mage makes her Dex save, so she takes half of (4d10)[12].
Bonus Action to cast Mass Healing Word (3rd Level) on Ttharg, Cocytus, Rumble, Nibum, Triceratool, and Fork. I believe Triceratool is a Construct and therefore doesn't benefit, but may as well target them anyway. Everyone heals (1d4+2)[4]