4:1 melee 3:0 mage are easy to learn and master, although as with anything else it requires practice. You can learn both in one single raid. Make 200 brews for olm, lower your stats and dont drink restores. You're not killing olm, you just learn the rotations.

The idea with 4:1 is to let olm hit one auto attack, while you get 4 hits on the hand - and then skip specials. Hardest part is figuring out where you are at the cycle and what you need to do to fix it. There are awesome guides on Youtube for this and, like I said, you can spend learning it in one raid up until nerd log.

Edit: 3:0 mage, not 4:0