I find it very hard to keep up my cs once my team starts grouping at mid. Normally the adc just takes all the cs because of their superior attack damage/speed.
im pretty sure laning phase is over if your entire team is grouping mid at that point, no one is entitled to anything, grab what you can
Instead of using your spell right away and last hitting with your autos,
weaken all the different creeps down with your autos then nuke them all at once with your spell.
Go bot and take the CS there. Don't let all that gold go to waste.
what everyone else said, and also, jungle farm exists.
Use spells
Basically, either be better at CSing than your teammates, push with your team for towers and objectives, or roam and farm other lanes that they all left to come mid.
if you're a melee mage / assassin you should move bot. if you're a mage, you should stay mid and siege with your team.
at 2 items you're really strong as a mid laner since you will have 2 of your spells maxed lvl2 ult and around 200-250 AP
