What's a good Artifact for bosses, like Wotan?

My Last Stand Otto Idol is pretty good, but doesn’t help much when facing bosses. What’s a good alternative for Zane?

I just use an Icebreaker with +damage to the weapon type I’m holding. Like for Wotan I use +SMG for Cutsmans and swap out to +AR for Better Half to use Dictator. When I’m using rocket Double Barrel builds obviously Cutpurse. But if you have trouble killing him quickly then use a Snowdrift for that fight to avoid a lot of damage. Otherwise your Last Stand is fine though Otto Idol doesn’t really do much for you.

easily snowdrift with corrosive dmg and probably smg or shotty dmg depending on what you are doing maybe even heavy dmg