I’m not saying “True Strike shouldn’t exist”. I’m saying as it is, it’s incredibly underbalanced and not worth spending two turns to cast one spell.

I’m all for build diversity, but if you want to guarantee your big spells land (you can still miss with advantage, btw) you might as well pick Divination Wizard and use a Portent. If someone wanted to use this cantrip and I was DMing, I’d adjust it to be more accessible.