Gravity Well says it triggers off the following as you stated before as have others but I think your missing a key fact.
AoE spells work just fine with this feat if your going off the wording, "You’ve learned how to manipulate gravity around a living being: whenever you cast a spell on a creature, you can move the target 5 feet to an unoccupied space of your choice if the target is willing to move, the spell hits it with an attack, or it fails a saving throw against the spell."
If the AoE spells hits the enemy, not if it is directed at an enemy. This also works if they failed the save on said AoE spell.
The maximum overall motion would come from a spell that hits with a couple of attacks or forces multiple saves or, in the case of magic missile or a buff, is solid on inclined goals, on multiple targets - it could certainly trigger more than one times per casting, supplied there are more than one creatures. For example, you could cast Scorching Ray at 3 one-of-a-kind creatures. All three are actually difficulty to the Gravity Well rule if the Ray hits them, so all 3 may be moved. Same component with Eldritch Blast.
It appears unclear until you go into the nitty gritty details of how spells work on a fundamental level. Many here have pointed out that a creature within a spell’s area of effect is not necessarily a target, however, this is contradicted by the Basic Rules “Casting a Spell”:
“Many spells specify that a target can make a saving throw to avoid some or all of a spell's effects. The spell specifies the ability that the target uses for the save and what happens on a success or failure.”
Thus, all creatures within your spell’s area are targets, otherwise, Fireball, Cone of Cold, and any other AOE saving throw spell wouldn’t work.
"You can do something like Jim's Magic Missiles, upcast it to level 9 to make 11 missiles, and then move one creature 55 feet."
As a DM I'd not allow that. It is 11 missiles.....but only one spell.
It's a 9th level spell slot. You can do far more impressive things with a 9th level spell slot than just move someone 55 feet.
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Spells, Monsters, Subclasses, Races, Arcknight Class, Occultist Class, World, Enigmatic Esoterica forms
Gravity Well says it triggers off the following as you stated before as have others but I think your missing a key fact.
AoE spells work just fine with this feat if your going off the wording, "You’ve learned how to manipulate gravity around a living being: whenever you cast a spell on a creature, you can move the target 5 feet to an unoccupied space of your choice if the target is willing to move, the spell hits it with an attack, or it fails a saving throw against the spell."
If the AoE spells hits the enemy, not if it is directed at an enemy. This also works if they failed the save on said AoE spell.
The maximum overall motion would come from a spell that hits with a couple of attacks or forces multiple saves or, in the case of magic missile or a buff, is solid on inclined goals, on multiple targets - it could certainly trigger more than one times per casting, supplied there are more than one creatures. For example, you could cast Scorching Ray at 3 one-of-a-kind creatures. All three are actually difficulty to the Gravity Well rule if the Ray hits them, so all 3 may be moved. Same component with Eldritch Blast.
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It appears unclear until you go into the nitty gritty details of how spells work on a fundamental level. Many here have pointed out that a creature within a spell’s area of effect is not necessarily a target, however, this is contradicted by the Basic Rules “Casting a Spell”:
“Many spells specify that a target can make a saving throw to avoid some or all of a spell's effects. The spell specifies the ability that the target uses for the save and what happens on a success or failure.”
Thus, all creatures within your spell’s area are targets, otherwise, Fireball, Cone of Cold, and any other AOE saving throw spell wouldn’t work.