Tandi will stay to the outside of the fight and ready an action to grapple the beast if it attempts to flank the rest of the group.
Seeing Rillian fall so quickly, Tandi wasn't too interested in going in after his body until after they dealt with the beast. Deciding her speed was a great asset, she watched the flanks of the others in case it attempted to move around them.
*Thurgan tries to make an attack, but the creature shimmers and it misses. And Sashal stares at it and concentrates, but the enemy shrugs it off. However, as Scun swings his club in a vengeful arc, it smashes down upon the creature and shatters its crystal-like skin, dropping it to the ground where it can be smashed to pieces, no longer shimmering in a way that bends the light and makes their attacks fail.*
(OOC: Victory! Going to do anything here, or just head onward, cruising around the maze in search of the rear exit?)
Findoram sighs in relief "Good riddeance! I thought we would never get rid of that thing. Well done people! Anybody who can use a some healing from this wand?"