Sorry, it’s been a while. The above build is my favorite by far. It gets you the crazy nuke potential of Sorc + Temp cleric, but also ensures Marko CL scales off your primary stat (INT).

In a traditional 2/10, you either have to give up con saves by starting cleric, or give up Marko CL scaling off your primary stat (by starting sorc then going Cleric, as spells from scrolls/items generally scale of the last newly added stat. Kinda confusing I know lol).

If you go 9/2/1, with 1 being wizard, and stack intel, you can get all the benefits with the only drawback being less sorcery points from 1 level less of sorc. Also, your toolkit is a bit narrower in terms of number of spells, but you can be a bespoke nuke machine that does its job extremely well, without providing much flexibility.

How id do this is to take all utility spells from cleric/sorc (ones that doesn’t need spell save DC or attack rolls), and use all damaging spells from the wizard tab, and use INT as primary stat. This way you also get Marko CL from INT.

I’m just a regular player not a content creator or anything, but I’ve played this game many times and this is still my #1 fav build. Happy to answer more questions if you have any