Great analysis. Are the 550 potency of EF calculated from the damage it dealt in the LL compared to Phantom Rush? Or did I miss a tooltip?
On top of that Rising Phoenix has a changed potency of 700 according to a newly leaked
tooltip.
LF + DK spam is still 411.6, as you said.
A full Phantom Rush cycle brings us to 1300 (411.6 + 396.8 + 491.6) ÷ 3 = 433.3~ for the weak Solar Nadi variant and 1366 (411.6 + 462.8 + 491.6) ÷ 3 = 455.3~ for the strong variant.
So yeah, Elixir Field would need a potency of 750 to make the spam worth it and that's not going to happen lol. I don't think that even the single target Lunar Nadi skill will be that strong & it's likely going to share potency with Rising Phoenix.