What gear and artefacts are good to beat Nameless Deity?

I’m noob in terraria. My friend offer me to play it with Calamity Wrath of Gods mod, and we reached Nameless Deity, but my gear is not ready to it. For more information I put a photo of it (sry that’s not a screenshot). I also use Murasama and Cosmic Ark (that scissors weapon), but its really hard cause of low range and small damage. Maybe some tips for weapon too? I also use exo box, suspicious looking tentacle and Hermits box of one hundred medicines.

I’m noob in terraria. My friend offer me to play it with Calamity Wrath of Gods mod, and we reached Nameless Deity, but my gear is not ready to it. For more information I put a photo of it (sry that’s not a screenshot). I also use Murasama and Cosmic Ark (that scissors weapon), but its really hard cause of low range and small damage. Maybe some tips for weapon too? I also use exo box, suspicious looking tentacle and Hermits box of one hundred medicines.