Pre ban list LSS deck.
I built this deck just a few days before the new ban list and beacuse the ban list comes into effect on the 1st of March I decide to play one last time with this deck before I need to change the list.
Deck is pretty simple to play. Use Kazuma to get wind trigger into hand if needed, use level 1 combo to maintain handsize and focus on grabbing cards you can play next turn. Try and have at least 1 Vanir or Masked Darkness in hand by level 2. If you hit level 3 and have the stock soul climax use the level 3 darkness combo or triple field vanir and hope to change into 3 masked darkness to survive following turn with her scry. Use stock souls throughout the game to build stock as Vanir/Masked Darkness is your end game focus. Use early play Aqua as needed to stay at level 2 as long as possible.
Wanted to go with a non-Lion build here, and I tried to use Yayoi as much as I could. Might change it a bit later to add the sisters to it.
EDIT: Added Yayoi bottom deck bombs. I really like that card.
The red version of this deck has much less utility than the green, and therefore plays a much more straightforward game. You have beaters and card advantage at levels 0 and 1, a level assist and a "cute" 2/1 that can deal with annoying costless back-row characters (SAO, Yellow Schoolgirls, Love Live!, Haruhi/Aliens, etc.), and level 3 brings you an early-play healer and a very interesting finisher (burn for cost?). I think the idea is to try to stay at 2/4 until your opponent is at 3, then burn the hell out of them with your cxc.