Sigi advice Cond build
I use a different set of swords to build Corruption stacks, then swap for a Bursting/Doom set.
Don’t run Earth and Doom at the same time; as all sigils with a cooldown share the same timer, you’ll never know when the cooldown’s up from Earth so you can swap to get the effect of Doom.
Doom in itself is useful for warriors who have no other source of poison, which would be particularly useful in a 1v1. Sigil of Bursting adds 6% condition damage, the tooltip is incorrect unless fixed in a recent update. So if you’re not willing to have another weapon purely for building corruption stacks, you could use Bursting in whichever set doesn’t have Doom.
I use hydromancy on the LB for range control, geomancy and corruption on the swords. Three stacks of bleed go a long way…
I like superior sigil of geomancy and superior sigil of earth sort of hard to pick which I like more.
with that in mind not so sure about corruption since their going to change it os you lose stacks on weapon swap.