I asked about this in another thread (https://www.grimdawn.com/forums/showthread.php?t=84702&page=2) but I’m still confused and I felt bad to use other’s thread to ask my own question, hence this post.
I know questions about conversion have been asked a lot, I’ve done some search on the forum and have read posts like this, now I understand that there is no double conversion in GD. But I also remember seeing people talking about converting damage of transmuted guardian (sorry can’t find that post), so I’m really confused and did some test myself.
Here’s the video of the test:
So basically with 461 spirit (forgot to show in video) I have +214.4% bonus magical damage. Grimtool says Lv2 celestial presence (guardian aura) damage is 24. I also have +15% acid damage. So without conversion the damage is 24*(1+2.144+0.15) = 79, which is correctly shown in the tooltip of the aura.
Training dummy has 18% acid resist and aura has -12% acid RR, so actual damage = 79*(1-0.18+0.12) = 74, which was exactly what I’ve got in video when I put on the Infernal Knight’s Girdle.
But if I change the belt to Crimson Lotus with 44% acid -> fire conversion, the damage change to 111.
Assume that the belt conversion works, we have 240.44 = 10.56 fire and 240.56 = 13.44 acid. With +491% fire damage we have 10.56*(1+2.144+4.91) = 85.05 fire, and 13.44*(1+2.144+0.15) = 44.27 acid. Finally with resists we have 85.05*(1-0.18) = 69.74 fire and 44.27*(1-0.18+0.12) = 41.61 acid, thus total damage is exactly 111.
So it seems that the damage of Guardian of Empyrion (or more precisely Celestial Presence) IS converted from fire to acid through transmuter then back to fire through global conversion, thus resulting in a double conversion.
Is this an exception to No Double Conversion rule, or did I misunderstand anything here?