Originally Posted by
Larynx
Tbh, you just don't get incredible benefit a lot of the time from Deluge. AG is pretty insane and can out heal a healing tide totem if you do it properly, and competes with Deluge for just sustained healing numbers. Deluge is probably only really worthwhile on fights where you're stacked in a healing rain for the entire fight, and Cenarius has a lot of spread to it. I haven't used Deluge for a single fight this tier. I also use CBT for Cenarius, since Echo is pretty useless outside triage fights like Dragons.
If you combine CBT with AG, you will double dip the CBT. You get 60% more healing going into the CBT, and 60% more healing going out of the already AG-buffed CBT when you pop it. You'll want to use CBT about 5 seconds before you AG, then manually pop CBT before AG ends as your last action. Works out to around 100% additional healing overall for the AG, rather than just 60%.