Hey there, I'm Worldshaper Kayto. This guide (which I'm very surprised no one else had done) is a quick reference to every hidden Magick and Technick location in the game. Thanks peeps.

This section details all technicks that are hidden in chests (and none that are available in towns). I provide the spell's name and a general idea of its location, and the rest is up to you.

TELEKINESIS
Allows you to make ranged attacks with melee weapons.
Location: Cerobi Steppe, Old Elanise Road

NUMEROLOGY
Deals damage that increases with each successive hit.
Location: Lhusu Mines- Transitway 1

SIGHT UNSEEING
A special attack you can use when blinded.
Location: Zertinan Caverns- Canopy of Clay

CHARM
Briefly take control of some foes, causing them to attack their allies.
Location: Salikawood- Quietened Trace

STAMP
Inflict your status on the enemy.
Location: Mosphoran Highwaste- Rays of Ashen Light

INFUSE
Give your mp to an ally and change their hp to 10x that amount.
Location: Dreadnought Leviathan Sub-Control Room OR Ogir-Yensa Sandsea, Platform 1 East Tanks

GIL TOSS
Throw your money away for damage.
Location: Draklor Laboratory 68th Floor, Room 601 West OR Pharos at Ridorana, Station of Ascension.

1000 NEEDLES
Deals 1000 damage, works at range.
Location: Sochen Cave Palace, Falls of Time

REVIVE
Expend all HP to restore an ally to life with full HP.
Location: Paramina Rift, Spine of the Icewyrm

ACHILLES
Make an enemy weak to a new element.
Location: Garamsythe Waterway, No. 4 Cloaca Spur

SHADES OF BLACK
Casts a random Black Magick spell.
Location: Tomb of Raithwall, Cloister of Flame

BONECRUSHER
Expend HP to instantly kill an enemy.
Location: Henne Mines, Phase 1 Dig

SHEAR
Lowers enemy magick resistance.
Location: Barheim Passage, Zeviah Span

ADDLE
Lowers enemy magick.
Location: Henne Mines, Special Charter Shaft

EXPOSE
Lowers enemy defense.
Location: Lhusu Mines, Site 9

WITHER
Lowers enemy attack.
Location: Pharos at Ridorana, Abyssal North

Hidden Magicks are detailed below with a basic location. Enjoy the hunt!

RENEW
Restore all of an ally's HP.
Location: Henne Mines, Special Charter Shaft

ESUNAGA
Restore regular status to all allies.
Location: Secret Merchant in Nabudis, Cloister of the Highborn

CLEANSE
Removes Disease status.
Location: Cerobi Steppe, the Terraced Bank

DISPEL
Removes an enemy's beneficial status.
Location: Tomb of Raithwall, Royal Passage

DISPELGA
Removes beneficial status for all foes.
Location: Feywood, White Magick's Embrace

PROTECTGA
Protect for all allies.
Location: Nabudis, Cloister of Distant Song

SHELLGA
Shell for all allies
Location: Great Crystal, Sirhru Phullam Pratii'vaa

BRAVERY
Raises attack for an ally.
Location: Nabudis, Cloister of the Highborn

FAITH
Raises magick for an ally.
Location: Nabudis, Hall of Ivory Covenant

REGEN
Gradually heals hp.
Location: Giza Plains, Nomad Village (During the Rains), OR Tchita Uplands, The Lost Way

HOLY
Large amount of holy damage.
Location: Pharos at Ridorana, Wellspring Ravel, 3rd Flight

SCOURGE
Deals a lot of damage, applies Sap.
Location: Shop in Barheim Passage

FLARE
Deals amazing damage.
Location: Pharos at Ridorana, Spire Ravel, 1st Flight

SCATHE
Tremendous damage to all foes. IMMA FIRIN MA LAZOR
Location: Lhusu Mines, Staging Area

BLIND
Blinds.
Location: Giza Plains, Dry-toam Hills

BLINDGA
Blinds all foes.
Location: Tchita Uplands, Fields of Eternity

SILENCE
Silences.
Location: Estersands, Yardang Labyrinth OR Lhusu Mines, Shaft Entry

SILENCEGA
Silences all foes.
Location: Nabudis, Hall of Effulgent Light

SLEEP
Puts foes to sleep by making them play FF13 (LOL!).
Location: Leviathan, Starboard Section, OR Ogir-Yensa Sandsea, Platform 1 East Tanks

SLEEPGA
Puts ALL foes to sleep.
Location: Giruvegan, Haalmikah Water-Steps

POISON
Poisons.
Location: Estersand, Sand-swept Naze

TOXIFY
Poisonga, basically.
Location: Barheim Passage, East-West Bypass

HASTE
Makes an ally faster.
Location: Eruyt Village, Fane of the Path

HASTEGA
Makes all allies faster.
Location: Great Crystal, Uldobi Phullam Pratii

COUNTDOWN
Doom on your target! Doom on them! Doom on them!
Location: Stilshrine of Miriam, Ward of Velitation

FLOAT
Completely bypass traps.
Location: Tchita Uplands, Oliphzak Rise

VANISH
Disappear from sight.
Location: Tomb of Raithwall, Royal Passage

REFLECT
Bounce spells back at their caster.
Location: Ogir-Yensa Sandsea, Primary Tank Complex

REFLECTGA
Reflect for all allies.
Location: Feywood, Edge of Reason

BALANCE
Deals more damage the lower your hp is compared to maximum.
Location: Nam-Yensa Sandsea, Demesne of the Sand Queen

WARP
A chance of instantly killing all foes.
Location: Nabreus Deadlands, Lifeless Strand

DEATH
Instantly kill a foe.
Location: Paramina Rift, Karydine Glacier

ARDOR
Great fire damage to all foes. Pair it with Oil!
Location: Pharos at Ridorana, Spire Ravel, 2nd Flight