What is the absolute best opener for summoner?

[Altimis]

Best opener will be Spur + Rouse + Enkindle as alway

Do it everytime when you want to open hard hitter

then follow by standard of RS + 3 DOTs + SC + SF + FESTER and so on

If Enkindle CD, just Spur + Rouse before you start fight, put on Shadow Flare before fight if you can

[Sanguisio]

Also, you can use ruin, ruin II fester as first hit, might just be a ps4 thing but makes use of the time .