I have 6* Corvus and 5* r4 Omega and recently maxed out Double Edge only (still saving for Liquid Courage). Gotta say I love it for both of them...I have max Willpower and 1 point in Coagulate as well to fully reduce bleed damage for Omega. It's amazing being able to heal up to full every path of Quest or AW, and the extra damage is definitely noticeable. I think if you have those champs you owe it to yourself to at least unlock suicides to try it out and at least have the option even if you don't keep them on at all times.
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I just got suicides last week too but allowed enough space for me to still grind.
Enjoy though, playing with Omega is completely different and Ghost hits even harder.
I think the offers are tailiored to where you are in the game i.e if you're not uncollected/cavalier.