When we are using Siphon Blood to trigger Iron Rose, it makes Simulacrums cast whatever Death Nova rune you have equipped on your skills bar, simulacrums aren’t casting Iron Roses rune which is Blood Nova.
Expected behav> Siphon Blood triggering Iron Rose makes simulacrums cast Blood Nova.
(this bug is currently seasonal “meta”, and it will affect future seasons when we are going to get “4 cube slots” theme)
Part 2:
If we don’t have any death nova on skills bar the sims are casting rune-less nova, so, for example tragoul set bonus isn’t working, or rather should say, it works at 33% efficiency because Siphon Blood trigger iron rose makes self cast Blood Nova, but sims are casting rune-less version of death nova.