>>3850233
Baldur's Gate 2 is famous for its mage duels. You also get your own wizard's tower... well... it's more like a wizard's... ball. And unique qizard quests connected to it.

Arcanum did some interesting things, but it's a half-finished jank.
If you are into necromancy, there's a new pretty decent necromancy focused RPG. But it's indie and story focused.