Wizards can solo.

I can and do solo as a wizard. I do not lure creatures to the zone line. I
can't, no speed. I'm not twinked, I have no JBoots, and I never get SoW while
soloing.

I nuke from long range, root before they get to me and nuke some more. When
they break root, I wait until after they attack and root again. After some
practice timing this, it this is very successful.

I soloed crocs in the oasis from 12th to 20th. Very easy 20% xp per hour. Yes
I did die a few times, but obviously by that xp rate it was rare.

I solo easy blues, sometimes medium blues, anything beyond that is dangerous.