1) Your MC is super OP. Knowledge about his past life already cheat, but you're still adding more cheats: - Soul Phoenix from owl (it's not pokemon to evolve like that) - Winchester knowledge ( where it came from, if he's normal muggleborn) - OP Artifact Hat - oh, and don't forget this "Magic CORE" **** Anything of this OP by itself, but together... You'll just drop this fan-fic soon, because: 1) it's boring as hell 2) to OP, if he'll not kill Volandemort with all his powers in 3-4 years that's will be really weird. Right now your fun-fic looks like "Cheat Engine".
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LIKESuper agree. Advice for the author. "Cheats" are okay in most stories, as something to differentiate your MC. Make him stand out from the pack. Harry potter is a bit different though. Just the knowledge of the RoR could make someone determined incredibly OP. It's one of those stories where being an '*****' in a childs body actually gives you a huge advantage, so adding anything on top seriously messes with the scaling. Not to mention there's all sorts of whacky spells you as the author could invent. Maybe your MC runs into a tomb with books from ages ago! All sorts of crazy things.