Permafrost Citadel

Create walls, ramps, pillars, and barriers of ice occupying up to twelve 10-ft. cubes within range. Each section has AC 15, 50 hit points, vulnerability to fire damage, and immunity to cold, poison, and psychic damage. The structure melts when the duration ends.

This power has its own stable page so it can be linked from any character, item, location, story post, bargain, curse, or future reward.