Least - Dark One's Own Luck; Eldritch Spear; Eldritch Glaive
Lesser - Eldritch Chain; Hellrime Blast or Beshadowed Blast*; Ignore the Pyre
Greater - Tenacious Plague; Chilling Tentacles; Vitriolic Blast
Dark - Eldritch Doom; Retributive Invisibility; Dark Premonition
*Hellrime deals cold damage. So if you're going against a fire sub-type you're effectively dealing 50% more damage. There are quite a few fire sub-types on RoT.
Beshadowed is a blind effect blast, and isn't considered a mind effect. There are a lot of enemies immune to mind effects on RoT, and most "debuffs" that warlocks have a mind effects.
So I was thinking of making a warlock once the new patch is out but I've never really tried a warlock on RoT - or at least not extensively enough after the new changes where made to the spells.
Any recommendations on this build is welcomed. I'd also like to know about anyone's experiences with Warlocks on RoT(tips, tricks, invocation choices, and so on). I'm going pure DC based, so keep that in mind when you make recommendations. If you think that its a bad idea to go pure DC, let me know; and let me know why