Artes and Other Abilities List
Please note: THIS SKILL LIST IS IN NO WAY 100% CANON, NOR DO I CLAIM IT TO BE! Outside of his Daathic Artes, Ion (replica and original) has no set in stone skill list. This list was cobbled together from observations of both the game, manga, anime, and audio dramas.
I assume that Ion, in addition to his abilities as Fon Master, would also have the basic healing, defensive, and support abilities of an Oracle Knight that served as back up. As Ion is not the type to sit still while others do the work for him, I imagine him standing back and serving as support while his Guardians protected him. The fact that Ion knows some healing abilities is supported in the anime, where replica Ion is shown assisting in healing people at Akzeriuth. Because the replica was made to be a convincing replacement of the original, the original would also know these abilities.
Also note: while Ion will have recovered from his illness in SP, it doesn't mean he's completely out of the woods. The stronger the ability he uses, the more likely he is to feel ill, or to faint. It would be like replica Ion feeling faint every time he used one of his abilities in game.
BASE ARTES
Pow Hammer
Element: NA
Special Effects: May cause stun (though I imagine it being more of a "...did I just get hit with a toy hammer?" stunned then actual nearly knocked out stun).
Description: A toy hammer with a red mallet and yellow handle comes out of no where and clocks an enemy over the head.
FoF Change: Yes - Water
FoF Name: Frozen Hammer
NOVICE FONIC ARTES
First Aid
Element: NA (Seventh Fonon)
Special Effects: Minor healing (25% of Max HP in game)
Description: A warm green light engulfs an ally briefly.
FoF Change: Yes - Water
FoF Name: Meditation (50% healing, and also cures status effects)
Charge
Element: NA (Seventh Fonon)
Special Effects: Restore magical ability to one person (restores 15 TP in game)
Description: Hard to see in videos I've watched; I think it looks like First Aid, only a blue light instead.
FoF Change: Yes - Earth
FoF Name: Tribute (restores 15 TP to all but self)
MID FONIC ARTES
Healing Circle
Element: NA (Seventh Fonon)
Special Effects: Area effect, very small; heals a bit better than First Aid (45% HP to allies in the circle).
Description: A circle of runes appears under the target ally.
FoF Change: Yes - Wind
FoF Name: Fairy Circle (60% healing, cures status, and hurts enemies)
Barrier
Element: NA (Seventh Fonon)
Special Effects: Increases defense (10% in game).
Description: A clear glass-like barrier appears around the target briefly.
FoF Change: Yes (but Ion can't use it)
FoF Name: NA
Sharpness
Element: NA (Seventh Fonon)
Special Effects: Increases strength (10% in game).
Description: A brief swirl of red surrounds the target.
FoF Change: Yes (but Ion can't use it)
FoF Name: NA
Resist
Element NA (Seventh Fonon)
Special Effects: Increase magic defense (10% in game).
Description: (I-I've never seen it used; I'll update when I use it next time I play).
FoF Change: Yes (but Ion can't use it)
FoF Name: NA
HIGH FONIC ARTES
Resurrection
Element: NA (Seventh Fonon)
Special Effects: Wakes a knocked out ally and restores health (50% in game; in RP, it would not be effective against people that are dead, just on the brink of death). Also restores health if used on a non-knocked out ally (also 50%).
Description: Light engulfs the target as an angel's feather falls from the sky.
FoF Change: Yes (but Ion can't use it)
FoF Name: NA
DAATHIC ARTES
Daathic Seal
Element: NA (Seventh Fonon)
Special Effects: The ability to undo any Daathic Seals set in place (as shown repeatedly in game). Presumably, he also has the ability to create his own Daathic Seals.
Desciption: A Daathic Seal looks like a multicolored and unusual door. When unlocking it, it looks like a massive dial lock appears, turning around and around until the right "combination" is put in, and the seal is unlocked and the door disappears. Presumably when creating a seal, the same happens, only with a door appearing instead.
FoF Change: No
FoF Name: NA
Curse Slot
Element: NA (Seventh Fonon)
Special Effects: The ability to create and disperse Curse Slots. A Curse Slot infects a Fon Slot on the body of the target, enabling the creator to manipulate the individual to an extent. It strips the target of their will when the creator is in range, causing the person to be driven by their base emotions.
Description: When placed, a brief reddish-purple glyph appears on the infected area, before disappearing. It's never shown what Ion does to remove it.
FoF Change: No
FoF Name: NA
MYSTIC ARTE
Akashic Torment
Element: NA (Seventh Fonon)
Special Effects: Both Sync's Mystic Arte and Luke's "Ion" Mystic Arte are the same skill, but the name is derived from Sync's MA. This is Ion's heavy hitter that is likely to turn people into bloody smears on the pavement.
Description: A glyph spreads out over a wide area, waves of Seventh Fonons rising up and damaging everyone caught in the glyph, before one final massive blast. It can be seen repeatedly in this video.
I assume that Ion, in addition to his abilities as Fon Master, would also have the basic healing, defensive, and support abilities of an Oracle Knight that served as back up. As Ion is not the type to sit still while others do the work for him, I imagine him standing back and serving as support while his Guardians protected him. The fact that Ion knows some healing abilities is supported in the anime, where replica Ion is shown assisting in healing people at Akzeriuth. Because the replica was made to be a convincing replacement of the original, the original would also know these abilities.
Also note: while Ion will have recovered from his illness in SP, it doesn't mean he's completely out of the woods. The stronger the ability he uses, the more likely he is to feel ill, or to faint. It would be like replica Ion feeling faint every time he used one of his abilities in game.
BASE ARTES
Pow Hammer
Element: NA
Special Effects: May cause stun (though I imagine it being more of a "...did I just get hit with a toy hammer?" stunned then actual nearly knocked out stun).
Description: A toy hammer with a red mallet and yellow handle comes out of no where and clocks an enemy over the head.
FoF Change: Yes - Water
FoF Name: Frozen Hammer
NOVICE FONIC ARTES
First Aid
Element: NA (Seventh Fonon)
Special Effects: Minor healing (25% of Max HP in game)
Description: A warm green light engulfs an ally briefly.
FoF Change: Yes - Water
FoF Name: Meditation (50% healing, and also cures status effects)
Charge
Element: NA (Seventh Fonon)
Special Effects: Restore magical ability to one person (restores 15 TP in game)
Description: Hard to see in videos I've watched; I think it looks like First Aid, only a blue light instead.
FoF Change: Yes - Earth
FoF Name: Tribute (restores 15 TP to all but self)
MID FONIC ARTES
Healing Circle
Element: NA (Seventh Fonon)
Special Effects: Area effect, very small; heals a bit better than First Aid (45% HP to allies in the circle).
Description: A circle of runes appears under the target ally.
FoF Change: Yes - Wind
FoF Name: Fairy Circle (60% healing, cures status, and hurts enemies)
Barrier
Element: NA (Seventh Fonon)
Special Effects: Increases defense (10% in game).
Description: A clear glass-like barrier appears around the target briefly.
FoF Change: Yes (but Ion can't use it)
FoF Name: NA
Sharpness
Element: NA (Seventh Fonon)
Special Effects: Increases strength (10% in game).
Description: A brief swirl of red surrounds the target.
FoF Change: Yes (but Ion can't use it)
FoF Name: NA
Resist
Element NA (Seventh Fonon)
Special Effects: Increase magic defense (10% in game).
Description: (I-I've never seen it used; I'll update when I use it next time I play).
FoF Change: Yes (but Ion can't use it)
FoF Name: NA
HIGH FONIC ARTES
Resurrection
Element: NA (Seventh Fonon)
Special Effects: Wakes a knocked out ally and restores health (50% in game; in RP, it would not be effective against people that are dead, just on the brink of death). Also restores health if used on a non-knocked out ally (also 50%).
Description: Light engulfs the target as an angel's feather falls from the sky.
FoF Change: Yes (but Ion can't use it)
FoF Name: NA
DAATHIC ARTES
Daathic Seal
Element: NA (Seventh Fonon)
Special Effects: The ability to undo any Daathic Seals set in place (as shown repeatedly in game). Presumably, he also has the ability to create his own Daathic Seals.
Desciption: A Daathic Seal looks like a multicolored and unusual door. When unlocking it, it looks like a massive dial lock appears, turning around and around until the right "combination" is put in, and the seal is unlocked and the door disappears. Presumably when creating a seal, the same happens, only with a door appearing instead.
FoF Change: No
FoF Name: NA
Curse Slot
Element: NA (Seventh Fonon)
Special Effects: The ability to create and disperse Curse Slots. A Curse Slot infects a Fon Slot on the body of the target, enabling the creator to manipulate the individual to an extent. It strips the target of their will when the creator is in range, causing the person to be driven by their base emotions.
Description: When placed, a brief reddish-purple glyph appears on the infected area, before disappearing. It's never shown what Ion does to remove it.
FoF Change: No
FoF Name: NA
MYSTIC ARTE
Akashic Torment
Element: NA (Seventh Fonon)
Special Effects: Both Sync's Mystic Arte and Luke's "Ion" Mystic Arte are the same skill, but the name is derived from Sync's MA. This is Ion's heavy hitter that is likely to turn people into bloody smears on the pavement.
Description: A glyph spreads out over a wide area, waves of Seventh Fonons rising up and damaging everyone caught in the glyph, before one final massive blast. It can be seen repeatedly in this video.