GamePress
Would it work if i Fuse them?
I recently gotten a pity-break 5-star Neutral IV Merric and i was wondering if i should merge him with my +6 4-star Merric and would i be able to weapon refine Excalibur into Dark Excalibur if i choose to do it or should i save my 5 5-star Merric for something Else?

Fate Grand Order
Dragonball Legends
IV Calc
Heroes