Originally Posted by RagnarokCzD
Reaply maybe ... dunno, have to keep researching. laugh
But Hex is regular leveled spell ... same as Misty Step, same as Healing Word ... and yet you cant use neither of those in same turn as any other spell that isnt Cantrip. O_o

So if this rule would be aplied ...
I dare to say that you would need to separate it into two turns ... like this:
1st round: Hex + Eldrich Blast (since that is cantrip, and therefore okey)
2nd round: Scorching Ray

Honestly I think that would be a fair trade off over two turns as it would give your melee classes a purpose. Misty step, hunters mark and hex are class specific support spells even though they are "levelled" they do no damage or apply combat disadvantage. Hex and hunters mark have a strict set of rules apply to the effects. You must attack with something that requires a ranged saving throw or a weapon otherwise it doesn't do anything. Potential damage is a best case scenario and very rarely applies max damage.

That said your point is valid obviously.