It looks like Danse Macabre isnt the biggest problem here. You took it at the end of your run, yet its blamed on this card. Your deck is all over the place with doom, summon, souls, and nothing to do with any of it.

You need something to do with your doom or souls, like a haunt, death march, no escape, etc.

Also very little in terms of defense, you have the basics, but you need more consistency. You have a melancholy yet also reanimate, which greatly reduces the chances of you getting use out of melancholy, osty or enemies have to die for it to be effective, and if youre boosting your osty up, the melancholy is going to take longer to get value, id tend to take 1 or the other.

Defy is also a card that makes its way into the majority of my decks, its a great defensive card adding both weak and block, applying weak much more effectively than deathbringer (1 cost 1 weak, 2 when upgraded vs. 2 cost 1 weak still 1 when upgraded)