Second, your creature base is really off. You have all these high cost creatures that doesn't fit into what the deck tries to do. You have delve creatures with no fast way to feed your graveyard. You don't have any ramp, Courser, or relatively any card draw.
2 Tasigur, the Golden Fang
2 Gurmag Angler
2 Reaper of the Wilds
1 Sidisi, Undead Vizier
2 Den Protector
1 Ugin, the Spirit Dragon
1 Garruk, Apex Predator
3 Languish
3 Drown in Sorrow
3 Bile Blight
2 Sultai Charm
3 Thoughtseize
1 Murderous Cut
1 Crux of Fate
1 Perilous Vault
1 Silence the Believers
3 Hero's Downfall
4 Temple of Malady
8 Swamp
4 Polluted Delta
1 Island
4 Opulent Palace
4 Ashiok, Nightmare Weaver
4 Duress
2 Back to Nature
4 Feed the Clan
1 Perilous Vault
expecting meta to turn aggressive for the next few weeks with aggro and devotion, but still need to be able to deal with control
Second, your creature base is really off. You have all these high cost creatures that doesn't fit into what the deck tries to do. You have delve creatures with no fast way to feed your graveyard. You don't have any ramp, Courser, or relatively any card draw.
Standard: BG Golgari Midrange
Modern: U Merfolk GWUBR 5 Color Humans UBW Esper Gifts GW Bogles