Build Relic on Thresh and want cs? No, unless you don't know how your E works

I always am worried when, as adc, I have a support: in the early game these guys extreamly struggle on hitting correctly the cs (idk why sincerly, I am still waiting a some kind of fix after 2 years) but as myself a player I found out that the right way to use the relic is to first max E.

E, for those who don't know, simply empower his aa. Do you know when his blade glows? That means that your next aa deals a lot of damage, so you'll have an higher probability (almost certainty) to execute a minion and use the relic stack.

You also have an icon on top of your abilities that indicates your blade is charging. Even does an other-world sound when it is fully charged.

So, if you want to use the relic stack max E first, otherwise you'll be tilted and flamed to hell