User blog comment:InvictusKris/Deck Blog: The Boss Gauntlet!!!/@comment-24965906-20151117015309

You dare use Hyakki when an Omni Lord is present?!

But seriously, Jariim doesn't work in this deck. His effect only activates when your opponent is damaged by a card effect. The only way you can do that is by Penetrate. World End reduces, not damages, and battle damage doesn't count.