Summon Ooze

4th-level conjuration

Casting Time: 1 action

Range: 60 ft.

Components: V, S, M* (acid within a gold-inlaid vial worth at least 400 gp)

Duration: Concentration, up to 1 hour

You call forth an ooze spirit. It manifests in an unoccupied space that you can see within range.

This corporeal form uses the Ooze Spirit stat block. When you cast the spell, choose Blue, Yellow, Black, or Gray. The creature resembles an ooze of that color, which determines certain traits in its stat block. The creature disappears when it drops to 0 hit points or when the spell ends.

The creature is an ally to you and your companions.

In combat, the creature shares your initiative count, but it takes its turn immediately after yours. It obeys your verbal commands (no action required by you). If you don’t issue any, it takes the Dodge action and uses its move to avoid danger.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, use the higher level wherever the spell’s level appears in the stat block.

Ooze Spirit

Large ooze

Armor Class 3 + the level of the spell (natural armor)
Hit Points 40 + 10 for each spell level above 4th
Speed 20 ft., climb 20 ft.

STR	DEX	CON	INT	WIS	CHA
4 (-3)	16 (+3)	10 (+0)	2 (-4)	10 (+0)	4 (-4)

Damage Resistances bludgeoning, piercing
Damage Immunities acid, poison, slashing, necrotic (Black only), cold (Blue only), lightning (Yellow only), psychic (Gray only)
Condition Immunities blinded, charmed, deafened, exhaustion, frightened, prone
Senses blindsight 60 ft. (blind beyond this radius), passive Perception 10
Languages understands the languages you speak

Special Traits

• Amorphous. The ooze spirit can move through a space as narrow as 1 inch wide without squeezing.
• Transparent (Blue only). Even when the ooze is in plain sight, it takes a successful DC 15 Wisdom (Perception) check to spot the ooze if it has neither moved nor attacked. A creature that tries to enter the ooze’s space while unaware of the ooze is surprised by the ooze.
• Corrosive (Black only). A creature that touches this ooze or is grappled by this ooze while wearing metal or wooden armor or hits it with a melee attack with a nonmagical weapon made of metal or wood corrodes. After dealing damage, the weapon takes a permanent and cumulative -1 penalty to damage rolls. If its penalty drops to -5, the weapon is destroyed. Nonmagical ammunition made of metal or wood that hits the pudding is destroyed after dealing damage. The pudding can eat through 2-inch-thick, nonmagical wood or metal in 1 round.

Actions

• Engulf. Melee Weapon Attack: your spell attack modifier to hit, reach 5 ft., one target. Hit: 2d6 + the spell’s level acid damage, and the creature is grappled. Once the ooze is grappling a creature, its movement speed becomes 0. The ooze can grapple as many creatures that fit within its space according to its current size (4 if large, 1 if medium or smaller.) At the start of a grappled creature’s turn, that creature takes 2d6 acid damage.
• Pseudopod. Melee Weapon Attack: your spell attack modifier to hit, reach 5 ft., one target that it is not grappling. Hit: 1d6 + the spell’s level bludgeoning damage plus 4d8 acid damage, and if the target is wearing nonmagical metal armor, its armor is partly corroded and takes a permanent and cumulative -1 penalty to the AC it offers. The armor is destroyed if the penalty reduces its AC to 10.
• Enlarge (Gray only). For 1 minute, the ooze increases in size. While enlarged, the ooze is Huge, doubles its damage dice with its pseudopod attack, and makes Strength checks and Strength saving throws with advantage. This ooze can only use this action once per day.

Reactions

• Split (Yellow or Black only). When this ooze is subjected to lightning or slashing damage, it splits into two new oozes if it has at least 10 hit points with the same statistics of the original. Each new ooze has hit points equal to half of whatever the ooze’s hit points were at the time of this reaction, rounded down, rounded down. New oozes are one size smaller than the original ooze. Once an ooze is Small-sized, it loses this reaction.