Prismatic Ooze

Family: Oozes

Large ooze, unaligned

Armor Class 14 (natural armor)
Hit Points 375 (30d10 + 210)
Speed 25 ft., fly 25 ft.

STR	DEX	CON	INT	WIS	CHA
26 (+8)	6 (-2)	25 (+7)	1 (-5)	10 (+0)	1 (-5)

Saving Throws Int +1, Wis +6, Cha +1
Damage Immunities see Prismatic Nature
Condition Immunities blinded, charmed, deafened, exhaustion, frightened, prone; see Prismatic Nature
Senses blindsight 120 ft. (blind beyond this radius), passive Perception 10
Languages –
Challenge 20 (25,000 XP)
Proficiency Bonus +6

SPECIAL TRAITS

• Prismatic Nature. The ooze coruscates with 7 colors. Each color provides it an immunity, and is vulnerable to certain spells or effects. When targeted by one of the effects below, the ooze makes a Constitution saving throw against the caster’s spell DC. On a failure, the effect counteracts the corresponding color of the ooze, causing the ooze to lose the corresponding immunity. A color is counteracted even if the ooze is immune to the counteracting effect. Red. Immunity to fire damage and to nonmagical ranged attacks. Counteracted by: 25 or more cold damage. Orange.
• Immunity to magical ranged attacks. Counteracted by: strong wind. Yellow. Immunity to acid, lightning, necrotic, and radiant damage. Counteracted by: 60 or more force damage. Green.
• Immunity to poison damage. Counteracted by: a passwall spell or another spell that can open a portal on a solid surface. Blue. Immunity to cold damage. Counteracted by: 25 or more fire damage. Indigo. Immunity to divination effects. Counteracted by: bright light shed by a daylight spell or a similar spell of equal or higher level. Violet. No immunity granted. Counteracted by: dispel magic or other spell that ends magic effects.
• Prismatic Touch. A creature touched by the ooze’s pseudopod or grappled by it at the start of the ooze’s turn experiences an additional effect based on the ooze’s current predominant color. The creature is then immune to Prismatic Touch until the start of the ooze’s next turn. Roll 1d8 to determine what color affects the target. If the color has been counteracted (see Prismatic Nature), then the touch has no additional effect. Each color allows a DC 21 saving throw to avoid the effect. 1. Red. 10 (3d6) fire damage (Dexterity save) 2. Orange. 13 (3d8) acid damage (Dexterity save) 3. Yellow. 14 (4d6) lightning damage (Dexterity save) 4. Green. 7 (2d6) poison damage and poisoned for 1 minute (Constitution save) 5. Blue. 18 (4d8) cold damage (Dexterity save) 6. Indigo. Flesh to stone (no concentration necessary) 7. Violet. blinded (Wisdom save). On a failed save, the target repeats the saving throw at the start of the ooze’s next turn. A successful save ends the blindness. On a failed save, the creature is transported to another plane of the GM’s choosing and is no longer blinded. 8. Potent Strike. Roll twice, rerolling duplicates or results of 8.

ACTIONS

• Multiattack. The ooze can use Dazzling Burst. It then attacks three times with its pseudopod. It can replace one attack with Consume Magic.
• Pseudopod. Melee Weapon Attack: +14 to hit, reach 25 ft., one target. Hit: 30 (4d10 + 8) bludgeoning damage. If the target is a creature, it is grappled (escape DC 24) and subjected to the ooze’s Prismatic Touch.
• Consume Magic. If the ooze is grappling a creature affected by an ongoing spell or spells, the ooze attempts to dispel the highest-level spell. It makes a Constitution check against a DC equal to 10 + the spell’s level. On a success, the spell ends and the ooze regains 33 (6d10) hit points.
• Dazzling Burst (Recharge 6). Each creature within 30 feet that can see the ooze must make a DC 21 Constitution saving throw. On a failure, a creature is blinded until the end of its next turn.

ABOUT

When powerful mages experiment with magic, strange and terrible creations are the inevitable result. The prismatic ooze is one potential consequence of such eldritch tinkering. Shimmering with vibrant iridescent colors, a prismatic ooze dazzles its victims before subjecting them to a myriad of harmful magical effects.

In rare cases, a prismatic ooze can spontaneously appear in areas of strong primal magic. Some fey realm explorers have given accounts of spotting island-sized prismatic oozes soaring high in the sky above, though, thankfully, no such behemoths have yet made it to the Material Plane.