Forum:Fiend/Dark World Deck

I just recently found out that cards that make you discard as a cost do not activate Dark World Effects. Here is my deck, based around Raviel, LOP. comments and suggestions please?

Monsters:

x1 Brain Jacker x2 Renge, Gatekeeper of Dark World

x1 Sillva, Warlord of Dark World

x1 Dark Jeroid

x1 Snipe Hunter

x1 Brron, Mad King of Dark World

x1 The Creator Incarnate

x1 Giant Orc

x1 Jowels of Dark Demise

x1 Newdoria

x1 Yomi Ship

x1 Zure, Knight of Dark World

x1 Sangan

x2 Broww, Huntsman of Dark World

x1 Opticlops

x1 Second Goblin

x1 Gren, Tactician of Dark World

x3 Archfiend Soldier

x1 Dark Lucius Lv 4

x1 Dark Lucius Lv 6

x1 Dark Lucius Lv 8

x1 Blowback Dragon

x1 Lava Golem

x1 The Creator

x1 Obelisk the Tormentor (Playable Version)

x1 Raviel, Lord of Phantasms

Spells:

x1 Riryoku

x1 Lightning Vortex

x1 Mystical Space Typhoon

x1 Swords of Revealing Light

x1 Gravekeeper's Servant

x1 Dark World Lightning

Traps:

x1 Magic Cylinder

x1 Dust Tornado

x1 Spellbinding Circle

x1 Draining Shield

x1 Sakuretsu Armor

x1 Spirit Barrier

I have a lot of cards that make you discard as a cost in my deck because I thought that activated Dark World effects. Can you help me on replacing those cards?