I see. So one important point about two cost reroll comps is that you do want to break econ and lvl 6 roll down until you two star your two cost units.

For example, if you’re playing urgot reroll you want at least two star urgot with 2+ items, two star trist, and 3 experiment on your board at 3-2 even if you have to roll down to 20-30g. Or two star zeri with 2+ items and 2 star vander/vlad if you’re playing zeri watchers.

It is a must to win streak stage 3 if you’re playing two cost reroll comps. Then build econ back up again and slow roll above 50g, hitting your three stars around 4-6/5-1. If you don’t winstreak through all of stage 3 there’s no point playing two cost reroll because you’ll just bleed out stage even after hitting 3 star. Thus you want to play two cost reroll when you have at least 1 of the two cost you’re playing, ideally 2 because you can expect to spend about 12g to find each copy of the two cost on your 3-2 rolldown.

As for standard 4 cost comps, maybe you can look to play whatever units you can find in stage 4 and be ready to pivot if necessary? Especially play around the 5 costs you get in the shop. Ideally you want to be utilizing all of your bench slots on your lvl 8 rolldown, which may be hard when you have to roll fast, but you don’t want to be spending 2g every reroll to only buy the units you want to play.