Explosion Bear
HAZARD 20 +38 (legendary)
An invisible rune causes the animated bear to explode if it is destroyed or if it finishes its dance while anyone is in the room.
DC 48 Thievery (legendary) to erase the rune without triggering the explosion (the DC is increased to DC 51 Thievery while the bear is moving), Dispel Magic (10th rank, counteract DC 39) to counteract the rune, or Nyrissa says the words "Good bear" to the trap before it finishes its dance.
AC 20; Fort +8, Ref +14
HP 40 (BT 20)
Fireball (fire, magical, trap)
The animated bear is reduced below its BT, or it finishes its three-round dance while there are still people in the room
The rune detonates into a blast of fire centered on the bear. All creatures within a 20-foot radius of the center of area K6 take 16d10 fire damage (DC 42 basic Reflex).
Pathfinder KingmakerOGL