Boskir's Embrace

When vial is used, the B.O.S.C.O. unit will emit
mist from its ventilation port, a 5ft radius green
transparent sphere around the unit will harden
preventing all ranged and AOE damage from
harming those within.
This effect will end after the user's next turn.
When B.O.S.C.O. moves, the bubble will move.
Bubble has an AC 10.
HP equal to 10+ Artificer level.
Multiple expended vials stack HP & duration.