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Seb-wejem
Lore Master could actually produce a really cool alt-Necromancer, if one wanted it: not necc. an undead-raiser, but someone whose spells rot the flesh of all within a 30' sphere (Fireball with Spell Secrets), or which fire bone fragments into their victims (Magic Missile with Alchemical Casting and Spell Secrets).
Every damage spell becomes necrotic.
Could do, although if a player came to me with that concept I'd probably just let them have alternate versions of damage spells that they can prepare. Burning hands to necrotic vapours; fireball to death orb, etc.