>>1158875971. Born with your powers/abilities/nature (this gets fuzzy with in utero engineering as the original meaning referred to birth, but the intent was to separate them from mutates, and arguably someone engineered in utero was a mutated fetus, not a mutant...for simplicity's sake this fuzziness is ignored and you're still a mutant).
2. What you are born with isn't an inherent aspect or ability of your species (ergo demigods and half-aliens are excluded) OR if it is your level with it is inherently unnatural, like acquiring magic or psychic powers without training
Inhumans with enough blood to undergo Terrigenesis can do so from birth so they meet both standards.
