ASA combat hit-chance calculator

Planetary influence

Set the current sky. Empowered schools get +1 free cast before miscast risk; weakened schools get -1. Check the RP Calendar for current planetary positions.

Character status

Select or add a character to manage health and conditions.

Health 5 / 5 Max

▾ Applied conditions

Combat

FAINTED

Attack type

Action

Base chance (%)

Spell being cast

Spells always hit. The only roll is for a miscast, based on the selected character's casts today. Use "Cast at target" to apply the spell's damage and inflicted condition to another character (fire spells negated by fire immunity).

Cast at character:

Hit chance

Base chance

80%

Total modifiers

+0%

Final hit chance

80%

Enter roll (1–100)

Awaiting roll

Spellcasting & miscast

Spells cast today

Select a character

Next cast miscast chance

Select or add a character to begin.

First 3 casts are free. After that, miscast chance doubles each cast: 10% → 20% → 40% → 80% → capped at 90%. Counts reset automatically each real-world day.

Weapon & strike

Strike another character:

Modifiers & conditions

No matching conditions.

Mutilation: arms & hands

Obliterated hand (Left) −30% Obliterated hand (Right) −30% Amputated hand (Left) −20% Amputated hand (Right) −20% Missing fingers (Left) −10% Missing fingers (Right) −10% Amputated arm below elbow (Left) −25% Amputated arm below elbow (Right) −25% Amputated arm above elbow (Left) −30% Amputated arm above elbow (Right) −30% Nerve-dead arm (Left) −20% Nerve-dead arm (Right) −20%

Mutilation: legs & feet

Amputated leg (Left) −15% Amputated leg (Right) −15% Amputated foot (Left) −5% Amputated foot (Right) −5% Missing toes (Left) −3% Missing toes (Right) −3%

Mutilation: face & head

No tongue −15% Lost eye (Left) −10% Lost eye (Right) −10% Lost both eyes −40% Collapsed ear (Left) −5% Collapsed ear (Right) −5% Deaf (both ears) −10% Shattered jaw −10%

Mutilation: torso

Broken ribs −10% Organ damage −15% Collapsed lung (Left) −15% Collapsed lung (Right) −15%

Burns

Minor burn scars (face) −3% Minor burn scars (hands) −5% Minor burn scars (body) −3% Major burn scars (face) −8% Major burn scars (hands) −15% Major burn scars (body) −8% Full-body burn scarring −20% Internal burns (throat) −10% Internal burns (lungs) −15%

Physical conditions

Limp (Left) −5% Limp (Right) −5% Tremor (Left hand) −15% Tremor (Right hand) −15% Tremor (both hands) −25% Spinal injury −15% Neurological trance −20% Partial paralysis (Left side) −25% Partial paralysis (Right side) −25% Seizure disorder −15% Chronic migraines −10% Memory gaps −5% Personality bleed −10%

Sensory conditions

Anosmia −3% Ageusia −3% Tinnitus −10% Light sensitivity −10% Touch sensitivity −5%

Positive: target & situation

Target unaware / flanked +15% Target restrained / prone +20% Close range melee +10%

Negative: situation

Target guarding −15% Poor visibility (light) −10% Poor visibility (heavy) −25% Caster injured / strained −10% Caster heavily strained −20% Long range melee −20%

Active magical effects

Attacker

No matching effects.

Debilitating effects

Temporary Blindness −40% Selenic Rest −45% Temporary Paralysis −45% Nausea −15% Excessive Salivation −5% Insect Stings −10% Assailed by Visions −25% Mental Trauma −15% Prone (self) −20% Out-of-Body −100%

Empowering effects

Chitin Skin +5% Compound Vision +10% Flight +15% Adhesion +10% Enhanced Perception +15% Penetrative Vision +10% Astral Wisdom +10% Precognition +30% Omniscience +20% Imbued with Colossal Power +30% Essesymbiosisal Knowledge +10% Faussemortis +10% Elemental Acclimatation +5% Mimicry +15%

Defender

No matching effects.

Defender debilitated (easier to hit)

Temporary Blindness +40% Selenic Rest (comatose) +45% Temporary Paralysis +45% Nausea +15% Insect Stings +10% Assailed by Visions +25% Mental Trauma +15% Prone +20% Out-of-Body (body undefended) +35% Excessive Salivation +5%

Defender empowered (harder to hit)

Flight (evasive) -15% Enhanced Perception -15% Precognition (dodges next attack) -90% Omniscience -20% Compound Vision -10% Chitin Skin (armoured) -5% Adhesion (mobile) -10% Imbued with Colossal Power -10% Fire Immunity (vs fire only) 0% Projectile Immunity (vs ranged) 0%

GM tools

GM notes

Select a character to add notes.

Weapon editor

Add or remove weapons available to equip. The HP damage value is the boost applied on a successful strike.

Melee

Ranged

⠿ Event record

Select a character to view their history.