You rip open a fracture in space, summoning a massive skull cannon in an unoccupied space within range. The cannon hovers in the air, its jaws glowing with condensed arcane force. When the cannon appears, you immediately fire a beam in a 90-foot long, 15-foot-wide line originating from the skull.
Creatures in the line must make a Dexterity saving throw (D = 16). On a failure: 8d10 force damage. On a success: Half damage.
Sustained Fire. While concentrating, you may use your bonus action on subsequent turns to reposition the skull up to 30 feet and fire again. A creature hit by the beam twice in the same duration has its speed reduced by 15 feet until the end of its next turn due to destabilizing energy.
Destruction. The cannon has AC 18 and can be destroyed in one hit regardless of damage. If reduced to 0 HP, it detonates in a 10-foot radius: dealing 2d8 in force. A Dex save will completely negate the damage.
* - (Requires at least a single bone.)
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