Black devotion?! (Help needed)

Unknown*

Fouler

Creature (24)

• 4x Black Knight
• 2x Desecration Demon
• 2x Erebos, God of the Dead
• 3x Gatekeeper of Malakir
• 4x Geralf's Messenger
• 3x Gray Merchant of Asphodel
• 3x Nightveil Specter
• 3x Vampire Nighthawk

Land (24)

• 2x Golgari Guildgate
• 16x Swamp
• 4x Tainted Wood
• 2x Woodland Cemetery

Enchantment (2)

• 2x Underworld Connections

Artifact (2)

• 2x Whip of Erebos

Instant (8)

• 1x Murder
• 3x Putrefy
• 4x Tragic Slip

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Sideboard

Creature (6)

• 3x Lifebane Zombie
• 3x Phyrexian Revoker

Artifact (3)

• 3x Tormod's Crypt

Instant (3)

• 3x Golgari Charm

Sorcery (3)

• 3x Inquisition of Kozilek

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Maybeboard

Instant (2)

• 2x Back to Nature

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This is an casual deck which i'm trying to improve but not sure which way should i go. Should i aim for making this more aggro or just try to stall the game for late game.

Also i would really need some help with the sideboard what should i put in it to make this more versatile?

If you have any good cards for this deck (or combos which u want to share with me), let me know and put some comments on below what you think of this!

==EDIT==Massacre Wurms are pretty useless. There just isn't a situation where i can use them well for cost of 6cmc. Therefore im looking something to fill their place but i dont have a clue yet with what.

Date added	10 years
Last updated	10 years
Legality	This deck is Unknown legal.
Rarity (main - side)	2 - 0 Mythic Rares 15 - 6 Rares 20 - 9 Uncommons 7 - 0 Commons
Cards	60
Avg. CMC	2.92