Fabled world synchro

I've played and played and played this deck and it just feels as if it's missing something. It's mostly based around using raven to discard and get out dark worlds and whatnot to play the fabled synchro monsters. Then either using pot of avarice to get cards back or removing them from play for chaos sorcerer.

Synchros-10
Fabled leviathan-2
Fabled ragin-1
Fabled valkyrius-2
Infernity doom dragon-1
Mist wurm-1
Goyo guardian-1
Stygian sergeants-2
Ancient sacred wyvern-1

Monsters-21
Fabled raven-3
Fabled krus-3
Fabled grimro-3
Goldd, wu-lord of dark world-3
Silva, warlord of dark world-1
Broww, huntsman of dark world-2
Chaos sorcerer-2
Dark armed dragon-1
Morphing jar-1
Plaguespreader zombie-1
Fabled soulkius-1

Spells-12
Pot of avarice-2
Dark world lightning-2
Lightning vortex-1
Dark world dealings-1
Dark hole-1
Giant trunade-1
Dark core-1
Mystical space typhoon-1
Monster reborn-1
Card destruction-1

Traps-7
Forced requisition-2
Solemn judgement-1
Mirror force-1
Bottomless trap hole-2
Rope of life-1

I want to take out dark armed for another silva, and if I can get ahold of one, take out dark core for pot of duality.