I have created an homebrew creature. I would like to know if it could be a resonable fight for a level 8 team (an elf druid, a human barbarian, a human warrior, a ranger goblin). Have I used too many condition immunities? Thank you.
Is the damage per round too high for a CR 12?
Name: Poisonous Spherimorph
Large Ooze, unaligned
HP 210 (20d10+100)
Speed 30ft., climb 30ft.
STR 18 (+4)
DEX 10 (+0)
CON 20 (+5)
INT 1 (-5)
WIS 10 (+0)
CHA 1 (-5)
Saving Throws: Wisdom +4
Skills: Stealth +4, Perception +4
Damage Resistances: bludgeoning, piercing, and slashing from non magical weapons
Damage Immunities: psychic, poison
Condition Immunities: prone, exhausted, unconscious, poisoned, grappled, deafened, blinded, charmed, frightened, restrained
Senses: blindsight 18m., passive Perception 14
Challenge 12 (8,400 XP)
Amorphous. The creature can move through a space as narrow as 1 inch wide without squeezing.
False appearance. As long as the creature remains motionless, it is indistinguishable from a puddle of water.
Spider climb. The creature has the ability to move up, down, and across vertical surfaces and upside down along ceilings, without needing to make an ability check.
Multiattack. The Poisonous Spherimorph makes two attacks: one with Pillar and one with Press.
Pillar. Melee Weapon Attack: +8 to hit, reach 5ft., one target. Hit 16 (3d8 + 4) bludgeoning damage plus 15 (3d10) poison damage. The target when hit must succeed on a DC 17 Constitution saving throw or become poisoned. If the target is already poisoned, no saving throw is made.
Press. Melee Weapon Attack: +8 to hit, reach 20ft., multiple targets. Hit 8 (1d8 + 4) bludgeoning damage plus 5 (1d10) poison damage. The target when hit must succeed on a DC 17 Constitution saving throw or become poisoned. If the target is already poisoned, no saving throw is made.