Connecting the DoTs: A Summoner Guide

[MariaNyan]

Since they changed the pot-timing and increased spellspeed, you can weave in 9x Ruin III into your opener. The way to do this is to precast shadowflare and rouse+spur.
My SS is @ 889 which results in 2.29s GCD, but i think you can prob do it with 870, or even less if you have arrow/selene.
For those, who don't have enough SS ruin ii+fester is the alternative.