If teleportation magic exists, why don’t people who own it teleport everywhere?
Because you die and a copy of you is created.
If time travel magic exists, why isn’t everyone doing everything in their power to get it and use it? Looking at you, harry potter.
It can only be used by women who have borne children, to travel to a point before they bore children. Obviously, this means their child disappears from existence.
The villains usually have spells that are supposed to be ultra powerful and can kill anyone quickly but somehow it doesn’t work against main characters and there’s no excuse for why fights drag on for so long. Imagine seeing the villain introduced by vaporizing someone but never seeing them do it again.
The main character leaves his normal life when a villain’s casual disappearing spell actually “doubles” him, resulting in the origin of his heroic power.
Main character(s) breaking the rules of magic just because…
Because schizophrenia. Main character hears voices and they occasionally meld into a chorus in a way that produces unique magical outcomes.
Because you die and a copy of you is created.
It can only be used by women who have borne children, to travel to a point before they bore children. Obviously, this means their child disappears from existence.
The main character leaves his normal life when a villain’s casual disappearing spell actually “doubles” him, resulting in the origin of his heroic power.
Because schizophrenia. Main character hears voices and they occasionally meld into a chorus in a way that produces unique magical outcomes.