Mutate Creature

5th-level Transmutation

You cause a beast, giant, humanoid, monstrosity or ooze you can see within range to gain a random mutation for the duration. If the target is unwilling, it can make a Constitution saving throw against your spell save DC. On a success, the spell has no effect. Creatures are immune to subsequent castings of this spell while already under its effect.

The mutation can be removed with dispel magic or remove curse.

Choose one mutation table, then roll 1d10.

Positive Mutations
1d10 Mutation Effect
1 - Roll on other table; if 1 comes up again, the spell ends
2 Wings Gains flying speed of 30 feet
3 Insect Eyes +10 Passive Perception
4 Muscle Enhancement +2 Strength (checks and saves)
5 Increased Brain Mass +1 Intelligence, +1 Wisdom (checks and saves)
6 Razor Claws Gain melee attack, 1d8 + Strength modifier slashing damage
7 Prehensile Tail +2 Dexterity (checks and saves), can wield 3 items
8 Amphibious Gains swimming speed of 30 feet. Can breathe air and water
9 Thick Hide +1 AC, gains resistance to bludgeoning damage
10 - Choose from 2 to 9 on this table
Negative Mutations
1d10 Mutation Effect
1 - Roll on other table; if 1 comes up again, the spell ends
2 Dense Bones Loses any flying or climb speed it has. If it has neither, its speed is reduced by 10 feet.
3 Photophobia -10 Passive Perception
4 Muscle Wasting -2 Strength (checks and saves)
5 Decreased Brain Mass -1 Intelligence, -1 Wisdom (checks and saves)
6 Herbivore Natural/claw attacks deal only 1 point of damage. Disadvantage on unarmed strikes.
7 Bulbous Tumours -2 Dexterity (checks and saves)
8 Water Breathing Can breathe water, but not air. Out of water, must hold breath and follow normal suffocation rules
9 Thin Skin -1 AC, gains vulnerability to slashing damage
10 - Choose from 2 to 9 on this table

Ezrin's Notes

I speak from experience when I say that sudden mutation – beneficial or not – is seldom pleasant. I suspect your companions won't appreciate you casting this one on them in a pinch.

I extrapolated the working of this spell from a trap that only conferred negative mutations. Nasty piece of work – and frankly, this version is not much better.

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