Spells

Spells cost mana. You start with 100 max mana and regain 0.6 mana per second; upgrades, factions, research and reincarnations raise both. Numbers below are tier 1.

Common spells

Spell	From	Mana	Duration	Effect
Royal Decree	Everyone	40	instant	Collect 15s of income now.
Call to Arms	Everyone, after 500 gold	30	30s	Taps earn x5 for 30s.

Alignment spells

Spell	From	Mana	Duration	Effect
Radiance	Light deed	50	30s	Taps earn x4 and +5% of gold/sec for 30s.
Blood Frenzy	Dark deed	60	30s	Dark buildings x3 for 30s. Blood price: buildings cost x1.5 while it lasts.
Share the Spoils	Light deed, from R18	50	sustained	Sustained decree: every 30s collect 10s of income while it drains 0.4 mana/sec. Recast to raise its tier; ends at 0 mana.
Reap Interest	Dark deed, from R18	35	instant	Collect 5s of income per interest stack. Each recast within 60s adds a stack (max 20).
Weighing of Crowns	Neutral deed	55	30s	Your crowns' production bonus counts x(1 + 0.25 x R^0.6) for 30s (R = reincarnations).
Fair Measure	Neutral deed, from R18	45	instant	Collect 1 faction coin per 8 squires (min 1) and 5s of income per 10 squires.

Faction spells

Spell	From	Mana	Duration	Effect
Verdant Bloom	Elves	60	45s	All production x1.8 for 45s.
Deep Delve	Dwarves	50	60s	Farms, Mines and your tier 5 and tier 8 buildings x3 for 60s.
Holy Light	Angels	35	40s	+20% production per stack (max 5). Recasting refreshes 40s.
Raise Dead	Undead	70	60s	+0.5% production per building owned for 60s (max x2.5).
Goblin Greed	Goblins	45	instant	Loot 15s of income and 10 faction coins.
Hellfire	Demons	80	20s	All production x4 for 20s. Short and brutal.
Thunderclap	Giants	60	10s	Strikes the forecast building: x(1 + 4 per sqrt of your Grey Bastions), and faction coins are found more often, for 10s.
Equinox	Wardens	100	20s	Lifts your least productive building by your three most-owned building counts and mana regen x1.5 for 20s.
Whisper Tide	Veiled	80	300s	All production +0.3% per second it stays active, for 300s.
Gem Drill	Gnomes	90	12s	Taps +25% per dig this reincarnation and coin find x3 for 12s.
Blood Chain	Vampires	70	16s	Production +50% per link for 16s. Each Blood Chain cast in a row adds a link; any other spell breaks the chain.

Oath spells (Ascension)

Spell	From	Mana	Duration	Effect
Temporal Flux	Oath of Order	70	60s	Production +5% and +0.02 mana/sec per minute of this reign, for 60s.
Maelstrom	Oath of Chaos	80	30s	3 random buildings x(1 + a random stat) for 30s.
All Creation	Oath of Balance	60	45s	Production +25% and coin find +10% per mana/sec of regen, for 45s.

Borrowed spells

Some spells cannot be learned, only lent to you (by the Sellsword, a lineage or a quest).

Spoiler: borrowed spells

Wyrm Breath (60 mana, 30s): Breathes on a random building you own: x6 for 30s.

Autocast, tiers and echoes

From R2, spells cast themselves when mana is full (autocast).
From R10, spell tiers: recast an active spell to raise its tier once that tier has been unlocked

 by keeping the spell active long enough. Higher tiers are much stronger and cost more mana. The cap is
 tier 5, tier 6 after Ascension I and tier 7 after Ascension II.

From R19 (Arcane Echo), a cast may echo and recast itself for free. The echo chance is shown

 in the Spells tab and grows with the tiers you have unlocked.

Spell quirks

Many spells hide quirks: upgrades that change how the spell works. A quirk shows "???" and a riddle until you discover it; once discovered it can be bought each reign. The riddles:

Verdant Bloom: ??? The elves sing loudest while the sun is young.; ??? A grove needs a score of springs, all within one reign.
Deep Delve: ??? Rats only follow the dwarves into a mountain of a hundred shafts.; ??? Dig on until the lantern has nothing left to burn.
Holy Light: ??? Light is holiest on the day of rest.; ??? Fill the chalice to the brim, again and again, until grace spills over.
Raise Dead: ??? The dead rise easiest while the living sleep.; ??? Call the dead an unlucky number of times in a single reign.
Goblin Greed: ??? Goblin greed is patient: feed it long, and let no other spell interrupt.; ??? A hand for every finger, all grabbing before the minute-candle gutters.
Hellfire: ??? The pact is signed before the new throne is warm.; ??? Build to the number of the beast, then let it burn.
Royal Decree: ??? Three decrees before the ink is dry.
Call to Arms: ??? Answer the call with a hundred hands before it fades.
Radiance: ??? Radiance shines brightest when three companions already glow.
Blood Frenzy: ??? While the blood runs hot, raise half a hundred walls.
Weighing of Crowns: ??? The scales are honest only when nothing else weighs on them.
Thunderclap: ??? A storm that strikes a hundred times in one reign learns to strike harder.
Equinox: ??? The balance is truest when it lifts the highest gate of all.
Whisper Tide: ??? Wear the same mask five reigns running and it begins to wear you.
Gem Drill: ??? The drill only sings in a pit a hundred holes deep.
Blood Chain: ??? A hundred bites without pause, and the chain forgets how to break.

Found one? Add it under a spoiler.