Control Acid

Cantrip
Theme(s)	Arcane Divine Occult Primal
Domain(s)
Casting Time	Standard Action (3 AP)
Range	6X meters
Component(s)	V, S
Duration	Instantaneous

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Effect

You create one of the following effects:

Damage

• Acid Jet: You project a concentrated stream or glob of acid at a target within range. Make a ranged spell attack; on a hit, the target takes Xd4 acid damage and must succeed on a contested Fortitude check or suffer corrosion, taking Xd4 additional acid damage at the start of their next turn unless they use a Minor Action to neutralize or remove the acid.
• Area Damage: At higher levels, if you deal damage in an area or to multiple targets, make an attack against each target. On a hit, a target takes X acid damage and suffer the effects of corrosion described above.

Control

You exert control over existing acid or conjure acid within a 1-meter-cube within range:

• Create Acid: You create up to X liters of corrosive acid in an open container or as a free-flowing liquid on the ground. The acid is potent enough to damage organic matter and corrode certain metals over time.
• Neutralize Acid: You render any non-magical acid harmless by neutralizing it into a harmless liquid.
• Enhance Corrosion: You can double the corrosive potency of any acid within range, making it more effective at breaking down materials.
• Weaken Acid: You can reduce an acid’s potency, halving its effectiveness for its remaining duration.

Shaping

You alter the physical form or corrosive qualities of acid within a 1-meter-cube within range. If you cast this spell multiple times, you can have up to three Shaping effects active at a time, and you can dismiss such an effect as a Minor Action. Each effect lasts T(+2).

• Acid Shapes: You mold acid into simple forms—like spikes, puddles, or tendrils—that can move or shift slightly.
• Corrosion Sculpting: You can direct acid to slowly etch patterns or dissolve a specific object in a controlled way.
• Acid Mist: You turn a portion of acid into a fine vapor, lightly obscuring the area and dealing Xd4 acid damage to any creature that enters or starts its turn in the mist.
• Color Change: You alter the color of the acid for identification, concealment, or intimidation purposes.

At higher levels

When casting this spell at higher levels, you may add the following changes to the spell. You may only choose one area of effect and one upgraded effect. Do note that some effects may be upgraded versions of earlier effects.

1st level

• Cone: Your chosen effect instead affects a 2X-meter-cone in the direction of your choice from you.
• Emanation: Your chosen effect instead affects a up to 2X-meter-radius sphere around you.

2nd level

Your effects gain the following upgrades:

• Armor Eater (Damage): When a creature is hit by your acid damage, they have its Armor (or natural armor / shield) corroded, reducing AC by 1. Multiple applications stack, but cannot reduce AC below 10 + Dex modifier (or equivalent). Magical armor has its AC reduced by for T.
• Magical Neutralizer (Control): You can neutralize any magical acid from a spell of equal or lower level to this spell.
• Detailed Shaping (Shaping): You may form intricate acid shapes, such as narrow streams weaving through cracks, or acid tendrils that wrap around specific points before dissolving them.

3rd level

• Line: Your chosen effect instead affects a 4X-by-S-meter line in the direction of your choice from you.
• Split: Your chosen effect instead affects X targets (or 1-meter-cubes) of your choice within range.

4th level

Your effects gain the following upgrades:

• Lingering Burn (Damage): Any creature damaged by your acid also take Xd4 acid damage at the end of their next turn, not removed by a Minor Action.
• Armor Eater (Damage): When a creature fails its contested Fortitude check from your acid damage, its armor or shield temporarily loses X AC until the end of its next turn as the acid weakens its protective gear.
• Universal Corrosion (Control): Your acid can now affect and corrode magical objects or materials from spells of equal or lower level to this spell.
• Acid Constructs (Shaping): You may solidify acid temporarily into dangerous, slippery, or trapping shapes, such as sticky acid slime that restrains creatures or hardened spikes coated in corrosive fluid.

5th level

• Burst: Your chosen effect instead affects a X-meter-radius sphere from a point of your choice within range.
• Wall: Your chosen effect instead creates a 5X-meter long, 2X-meter high, and 1X-meter thick wall of acid in a shape of your choice within range.

6th level

Any effect originating from you may instead originate from any pool or container of acid within range. Additionally, your acid-based effects can now persist for T(+4) after the spell ends, continuing to corrode and deal damage unless neutralized by a Minor Action.

7th level

• Chain: Your chosen effect instead affects X targets (or 1-meter-cubes) of your choice within range, with each successive target within X meters of the previous target.
• Cylinder: Your chosen effect instead affects a X/2-meter-radius by 3X-meter-high cylinder from a point of your choice within range.

8th level

Your effects gain the following advanced upgrades:

• Flesh Melt (Damage): Any creature hit that has no armor to corrode must make a contested Fortitude check. On a failure, the lingering damage effects the target suffers are increased to Xd10 and requires a successful Fortitude check to wipe off.
• Eternal Corrosion (Control): Acid you create or enhance persists indefinitely until neutralized, continuing to corrode whatever it touches.
• Masterwork Constructs (Shaping): You can sculpt acid into elaborate, semi-solid forms like weapons, traps, or barriers that retain both their shape and corrosive qualities for the spell’s duration.

9th level

At this level, Control Acid gains a unique area-of-effect bonus:

• Acid Flood: Your chosen effect instead affects an up to 8X-meter long, 4X-meter wide, and 2X-meter deep moving wave of acid in a shape of your choice. The acid moves 10X meters in a chosen direction, corroding everything in its path.