This is my personal favourite list to play combo danger darkworld. Subject to change. NO SIDE DECK HAS BEEN INCLUDED as I feel it is too format dependant. Put whatever suits the format into your side deck!
This deck is incredibly powerful unless hit by a powerful floodgate or handtrap such as Dimension Shifter or Droll & Lock Bird. Otherwise, the deck can play through several interruptions, and even with little to no going second cards can break boards quite easily.
Utilising the effect of Ceruli, Guru of Dark World to discard Sillva, Warlord of Dark World in your hand takes 2 cards out of your opponents hand. With most hands, this can be resolved once or sometimes twice in one turn (as none of them are once per turn), resulting in a 2 card hand for you opponent to play with (1 card left + draw for turn). Combine this with a 3-4 negate Apollousa, Bow of the Goddess, Number 22: Zombiestein, Unchained Abomination and the new Dark World fusion Grapha, Dragon Overlord of Dark World... I don't think your opponent is playing.
The deck is INCREDIBLY hard to explain over text, but I do recommend you research more builds and look for playstyles. This deck is incredibly fun to play and very rewarding.