Quick Deck, Plane Calling

Here's the deck I'd like to discuss if I wasn't getting on a plane right now:

// 20 Creatures

4 x Gatekeeper of Malikir
4 x Bloodghast
4 x Kalastria Highborn
4 x Fleshbag Marauder
4 x Abyssal Persecutor

// 6 Sorceries

2 x Grim Discovery
4 x Duress

// 4 Enchantments

4 x Soul Stair Expedition

// 6 Instants

2 x Tendrils of Corruption
4 x Smother

// 2 Equipment

1 x Trusty Machete
1 x Blade of the Bloodchief

// 22 Lands

14 x Swamp
4 x Verdant Catacombs
4 x Marsh Flats