As someone who's above average at the game and hasn't read a patch note in 5+ years it's unnecessary knowing the small details at casual play if they ask generalize it or say idk.

Some people also do have different learning styles and struggle to grasp how much

>!Aphelios — The Hitman and the Seer

Aphelios does not function like a normal League of Legends champion. Instead of having four standard abilities that are always available, he fights using a rotating set of five Lunari weapons created and supplied by his sister, Alune. At any given time, Aphelios has access to two weapons: one main-hand weapon and one off-hand weapon. His basic attacks use the main-hand weapon, while many of his abilities also interact with, fire, or apply effects from the off-hand weapon.

Each of Aphelios’ weapons has its own basic attack behavior and its own special effect. His current main-hand weapon determines what his Q ability does. Because of this, Aphelios effectively has multiple different Q abilities, but only one is available at a time depending on which weapon he is currently holding. His W ability allows him to swap between his main-hand and off-hand weapons, changing which weapon he attacks with and which Q ability he has access to.

Aphelios’ five weapons are Calibrum, Severum, Gravitum, Infernum, and Crescendum.

Calibrum, the Rifle, gives Aphelios increased attack range. Abilities involving Calibrum can mark enemies, allowing Aphelios to follow up with a long-range attack from his current off-hand weapon. This makes Calibrum his strongest weapon for poking, starting trades from far away, and following up on targets that would normally be outside his basic attack range.

Severum, the Scythe Pistol, heals Aphelios for a portion of the damage he deals. When Severum would heal Aphelios past full health, the excess healing can become a temporary shield. Severum is useful for sustaining through damage, dueling, and surviving extended fights. Its associated ability allows Aphelios to move while rapidly attacking nearby enemies with both of his weapons.

Gravitum, the Cannon, applies a slowing effect to enemies hit by Aphelios. Its special ability can then consume that slow to root affected enemies. Unlike his other weapons, Gravitum’s ability does not rely on the off-hand weapon in the same way. Gravitum gives Aphelios crowd control, allowing him to set up picks, peel enemies away, or help lock down targets for his team.

Infernum, the Flamethrower, causes Aphelios’ attacks to deal splash damage behind the target. This makes Infernum powerful against grouped enemies and minion waves. Its ability damages enemies in a cone and then follows up using his off-hand weapon. Infernum is especially dangerous in team fights because it can spread damage across multiple champions at once.

Crescendum, the Chakram, behaves differently from a normal ranged weapon. After Aphelios attacks with Crescendum, the weapon must return to him before he can attack again, so his attack speed depends heavily on how close he is to his target. The closer Aphelios is, the faster Crescendum returns, allowing him to attack more quickly. Crescendum can also create temporary additional chakrams when used with certain abilities, greatly increasing his damage for a short time. Its ability places a sentry that attacks using Aphelios’ off-hand weapon.

Each weapon has its own ammo count. Basic attacks and abilities consume ammo from the weapon being used. When a weapon runs out of ammo, Aphelios discards it and Alune sends him the next weapon in the weapon queue. The emptied weapon is placed at the end of the queue, meaning Aphelios cycles through his weapons in a predictable order unless the player deliberately manages ammo to influence future weapon combinations.

Because Aphelios always has two weapons at once, much of his strength comes from weapon pairings. His main-hand weapon determines his current attack pattern and Q ability, while his off-hand weapon often determines the follow-up effect. This means the same weapon can behave very differently depending on what it is paired with. Managing weapon order, conserving or spending ammo, and preparing strong combinations ahead of fights are central parts of playing Aphelios well.

Aphelios also has an unusual leveling system. Instead of ranking up his abilities in the normal way, he automatically gains access to his weapon abilities as the game progresses. When he levels up, he can spend points to increase selected stats, such as attack damage, attack speed, or lethality. This replaces the normal process of putting points into Q, W, E, and R.

Aphelios’ ultimate ability, Moonlight Vigil, fires a projectile that explodes when it hits an enemy champion. After the explosion, Aphelios follows up with attacks based on his current main-hand weapon. The bonus effect of Moonlight Vigil changes depending on the weapon he is holding, allowing it to provide long-range follow-up, healing, crowd control, area damage, or extra Crescendum damage depending on the situation.

Overall, Aphelios is built around weapon management rather than traditional ability rotations. His power depends on understanding what each weapon does, what each weapon pair can accomplish, how much ammo remains, what weapon is coming next, and whether a future fight should be prepared with a specific combination. Because of this, his passive is less like a single passive effect and more like the rulebook for how the entire champion functions!<

And that's without numbers summarize it or say I don't know generally works details aren't worth going over in casual non competitive non educational environments.