Affinity and prestige

Mechanics/Affinity and prestige

Two different ways a spell gets stronger: one you keep between runs, one you pick inside a run.

Affinity

Affinity is a spell's own mastery level, and it carries over between runs. Casting a spell earns it spell XP: each cast is worth the cast's XP value multiplied by 100, and again by the spell's mana cost divided by 5 when that cost is above 5, so expensive spells earn faster.

Level I	5 000 spell XP
Level II	15 000 spell XP
Level III	65 000 spell XP

Each level is applied on top of the ones below it, every run, so a spell at Level III carries all three bonuses.

Thresholds on the end-of-run screen, and the bonuses each spell lists.

What each affinity level grants

Spell	Level I	Level II	Level III
Chain Lightning	Damage +5	Mana cost -5	Amount +5 mana cost
Earthward	Duration +5	Mana cost -5	Damage +25
Exsanguinate	Size +25%	Mana cost -5	Damage +1
Fireball	Damage +5	Damage +5	Damage +5
Frost Nova	Damage +5	Size +50%	Mana cost -5
Gale	Knockback force set to 1	Size +25%	Damage +5
Ice Spear	Amount +1 mana cost	Amount +1 mana cost	Damage +5
Ink	Damage +5	Size +25%	Damage +5
Jam	Duration +10	Mana cost -5	Time between hits -0.1
Magic Missile	Projectile speed set to 2	Time between hits -0.05 does nothing	Duration +5 does nothing
Meteor Swarm	Time between hits -0.25 does nothing	Damage +5 does nothing	Meteor strikes +3
Omega Beam	Beam length +1	Duration +3	Damage +1
Poppet	Size +25% does nothing	Time between hits -0.5	Mana cost -5 does nothing
Prismatic Pylon	Duration +5	Duration +5	Duration +5
Raise Dead	Duration +10	Mana cost -5	Amount +3 mana cost
Riptide	Duration +5	Mana cost -5	Damage +1
Shroud of Bones	Duration +5	Duration +5	Size +25%
Spellblade	Damage +5	Crit chance set to 0.1	Crit chance set to 0.15
Thunder Storm	Mana cost -5 does nothing	Duration +5 does nothing	Amount +2 does nothing
Wisp	Damage +5	Time between hits -0.2	Time between hits -0.2

9 of these levels change nothing in this build. Spells with their own kind of affinity bonus (Chain Lightning, Ice Spear, Magic Missile, Meteor Swarm and the ones that only change their firing rate) replace the shared bonus code instead of adding to it, so a damage or cost value stored on the same level is never read. Marked does nothing above.

4 levels marked mana cost. The shared bonus code writes its amount bonus onto the spell's mana cost, so those levels raise the cost instead of raising the amount.

Prestige

Prestige is a level up card that changes how one spell behaves for the rest of that run. Taking the card sets the spell's prestige mode; each spell has its own short list of them, and each spell page shows what its options do.

Which prestige cards exist for each spell, and how they apply.

Prestige options by spell

Spell	Prestige options
Chain Lightning	Dark Lightning Disintegration Ray Twin Lightning
Earthward	Crushing Wave Living Boulder Magma Wall
Exsanguinate	Chains of Demise Sigil of Sacrifice Vampiric Domain
Fireball	Fae Fire Felflame Phoenix Fire
Frost Nova	Fimbulwinter Frost Fire Super Nova
Gale	Mist of the Abyss Wake of Kalor Winds of Time
Ice Spear	Celestial Spear Slayer Sword Thousand Knives
Ink	Ink of Armageddon Inkwell Irezumi
Jam	Certified Banger Surround Sound Witchcore
Magic Missile	Magic Wand Mirror Missile Missile Barrage
Meteor Swarm	Cometfall Firefall Starfall
Omega Beam	Gorgon's Beam Nihility Beam Purification
Poppet	A Real Girl Binding String Effigy
Prismatic Pylon	Gates of Suqar Prismatic Spire Tower of Torment
Raise Dead	In Between Minion Master So Below
Riptide	Quasar Roaring Flames Umi no Ryu
Shroud of Bones	Sutured Serpent Veil of Ice Winds of the Dead
Spellblade	Durendal Iaido Lunlight Chakrams
Thunder Storm	Derecho Fulmination Maelstrom
Wisp	Hunger Psychopomps Yurei

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