Rock Guardian
Rock Guardian is a low-level mid-threat. It requires coordination in order to either defeat or get past. Usually, the students will want to get past rather than defeat it.
Attacks:
Throw Rock
Grabs rock and throws it at a point in the room, dealing 2d12 damage in a 2 unit radius
Rock Pound
Pounds the floor, dealing 1d12 damage and stunning all units in a 4 unit radius
Stats:
HP: 500
Melee ATK: 5
Slow Speed (Melee attacks costs twice as many AP. Moving costs twice as many AP)