This is my magic deck, It's a legacy deck I suppose.
I wanted to know if I should make additions or switch out certain cards with others

Here's My Swamp Deck

60 Cards

Creatures - 21

Ob nixilis, the fallen
Kalitas, Bloodchief of Ghet
Liliana Vess
Mephitic Ooze
Royal Assassin
Endrek Sahr, Master Breeder
Nightmare
Lim-Dûl the Necromancer
Dreg reaver
Squirming Mass
Twisted Abomination
Infectious Horror
Skin Thinner
Kjeldorian Dead
Bloodseeker
Vampire Aristocrat
Moonglove Changling
2 Zombie Scavengers
Wall of corpses
Brass herald

Artifacts - 4

2 Magebane Armor
Sword of the Paruns
Gruul War Plow

Spells -10

Wretched Banquet
2 Hideous End
Pull Under
Wicked Reward
Coercion
Curse of the Cabal
Necromancer's Magemark
Dark Privilege
Dragon Shadow

LANDS - 25

25 Swamp