>>5903
Hey anon, you still here? I'm >>5461 and just now remember typing this in a hurry and then forgetting about it. If you really get into slayers watch it by airing order. Also, something you might like is Record of Lodoss War, but the OVA. If you get into that too the mangas (there are several) are really nice.
Since I see you liked Overlord, Log Horizon also has cool magic shit while being the best trapped in a video game type of anime because it actually uses game mechanics.
Fullmetal Alchemist (the manga, or if you prefer watching the fights in anime which are amazing then Fullmetal Alchemist: Brotherhood) doesn't deal with magic, but rather with alchemy. You might like it since it has great fights and the alchemy is fucking awesome. Next thing you know you'll be looking for more sickass alchemists instead of sickass wizards.
Konosuba is airing this season and it has EXPLOSION LOLI so yo might enjoy that.
Trinity Seven is magic school harem like any else, except the main character actually has a personality instead of being a bland MC. The magic is fun here, although it's short.
Rakudai might not be your thing, but it had some great fights so you can only watch those parts.
Fairy Tail has wizards but they're mostly punch wizards so that might not be what you're looking for.
And lastly a manga, Dungeon Meshi. It doesn't have much sickass wizards, but it's a must read fantasy manga if you love fantasy, especially D&D kind of fantasy. The elf is a wizard and she's nice.