Catoblepas

Fight! [2]
Enemies have the Death Ray (Recharge
5-6, DC 10 + CCRL, 5xCCRL necrotic
damage) ability.
Death Ray
Range: 30ft, Save: Constitution Save
Special: If the saving throw fails by 5 or more,
the target instead takes twice the necrotic damage.
The target dies if reduced to 0 hit points by this.