Cassian actively try to learn spells. Most of his mastery progress comes from his own effort and practice. He has to start from scratch, just like a first-year student, learning everything from the very beginning. That is why there is some delay in his spell progression.
On top of that, he also needs to catch up on magical history and theory in order to fulfill his role as a teacher.
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Lumos(Light-Making Charm) Base Spell Creates a beam of light from the wand tip, illuminating darkness. MAX Ch1
Lumos Noctis: Extinguishes all light in the area, plunging it into total darkness. Ch3
Lumos Spectaculum: Projects detailed moving illusions made of light (figures, scenes, etc). Ch3
**
Incendio(Fire-Making Charm) Base Spell Conjures open flame at the caster's target. MAX Ch1
Cinis Amissa: Summons the ash of a past flame, revealing what was last burned in that place, useful for uncovering lost scrolls or evidence. (Can only be used once per burned evidence.) Ch11
Pyroclave: Stores fire within objects, runes, or text, released under specific conditions. Ch11
**
Spongify (Softening Charm) Base Spell Softens the targeted object or surface, making it bouncy and able to absorb impact. 2/5 Ch14
Knockback Jinx (Flipendo) Base Spell Delivers a blast that pushes the target backward, can knock objects or people off balance. 1/5
Unlocking Charm (Alohomora) Base Spell Unlocks simple locks, latches, or magically-sealed mechanisms of low enchantment level. MAX
Ch42
Apertis Oculus - Older unlocking charm. Affects magical concealment. Forces passage by disrupting both enchantment and obfuscation layers.
Ice Jinx Base Spell Used to generate a small block of ice. 1/5
Disarming Charm Base Spell Disarms the target, typically causing their wand or held item to fly from their grasp. 52/5
Memory Charm (Obliviate) Base Spell Alters or erases selected memories from the target's mind. 1/5
General Counter-Spell (Finite Incantatem) Base Spell Cancels active magical effects or ends ongoing spells in the target area. 2/5 Ch17
Silencing Charm (Silencio) Base Spell Renders the target mute or silences a specific object, preventing sound from being produced. MAX
Ch55
Amphora Vox: Bottles the target's voice into a vessel, silencing them entirely until the spell is lifted or the "vessel" is shattered.
Music Charm Base Spell Produces a melody or replicates a specific tune through the caster's wand or a chosen object. 2/5
Levitation Charm (Wingardium Leviosa) Base Spell Make objects fly, or levitate. MAX Ch33
Gravitas Ascendio: Older form of levitation magic. Draws object upward through gravitational displacement. Lingers mid-air until caster severs connection. Ch39
**
Water-Making Spell (Aguamenti) Base Spell Conjures a jet of clean, drinkable water from the tip of the caster's wand. N.E.W.T level, classified as conjuration, an advanced form of Transfiguration. 1/5 Ch45
Note:
MAX Mastery means Cassian has passed the threshold of the Interface and was awarded with Ancient Variants. He can now cast those spells wandlessly and non-verbally, including the Ancient Variants, even if he hasn't reached MAX Mastery on the ancient variants themselves.
This list will be updated as more spells and Ancient Variants are revealed.