why are people using Sigil of Blood+Fire, Air+Fire, or 2earth?
don't they share the same cooldown?
or am i understanding it wrong?
2 Earths works because it increases the chances of the sigil proccing. You won't get two stacks of bleed on one crit ever but you will get an extra 24% chance to bleed on a crit. I have no idea why you would run any other combo, though. Maybe they just aren't aware of how the cooldowns work?