Support team:Seeing as Kai will need to complete his match before the deckbuilding phase finishes, it's important to get going on ideas for him as soon as we can, although we can suggest anything we want to him, it's up to Kai as to what deck to use, and we have to rely on PMs to contact him.
The best place to start is what entropy cards plastiqe can use:
What's important to note is that the only expensive card is Butterfly Effect, so a large number of entropy pendulums are unlikely. Possible decks I can see are an Adrenaline/Fallen Elf based deck or a Schrödinger's Cat/death based deck with Chaos seeds and maybe Butterfly Effects as filler. The Schrödinger's Cat deck would could not contain either Bonewalls or Poison, so it would be fueling Vultures or Soul Catchers for Bone Dragons. A Fallen Elf based rainbow might also be possible, but without Nova I'd have to doubt its effectiveness compared to a simple duo with Adrenaline.
A simple stall or domination deck should be able to take care of either of either of these, preferably with higher-HP creatures. Butterfly Effect is a serious risk, so we should probably avoid permanents. A Life/Fire based on Nature's Wrath should do the trick, like so: (completely untested, just a rough idea)
Hover over cards for details, click for permalink
5c0 5c0 5c0 5c0 5c2 5c2 5c2 5c2 5de 5de 5de 5de 5de 5de 5de 5de 5de 5de 5de 5de 5f6 5f6 5fb 5fb 5fb 5fb 5fc 5fc 5fc 5fc 5fc 8po
Deflags are in case of something like a Skull Shield, Rage Pots and Heals take care of the stalling elements whilst being the only two cards from Round 1, and the Phoenixes and Cockatrices are both fairly resilient.
Salvages:Gravity: 2 LS, 1 Steal, 1 Cloak, 2 Shields (conversion fodder).
Fire: 4 Dim shields, 2 Burning Pillars
Discards:This round we can almost get away with only discarding Pillars/Pendulums if we wanted to, whilst still having enough without needing to convert.
Adrenastaves: A lot of vital cards here for various decks, and only six Pillars/Pendulums. Assuming we discard them, we could discard a Nova, a Flying Weapon (5 of each left). a Graboid (4 left), an adrenaline (9 left) and two staves (5 left).
Shockwave Dragons: 12 Life Pendulums
PUgon: 8 Life Pendulums, 4 Dim shields
Firestall: 10 Life Pendulums, 2 Burning Pillars
Swishy's cost: 6 Life Pendulums.
Conversions:2 Shields -> 2 Life Pillars
Those Darkness cards almost give us room for a non-Devtosis duo, although I'm not sure if there'd be much point trying to build up extra darkness cards considering how strong Devtosis can be. Keeping a couple of extra Dim Shields might also be a good idea, but that might just be taking more for the sake of it.
All this would leave us with a woefully low 56 Life Pillars/Pendulums, so we'd probably need to do some more conversions somewhere. No idea where to start with that one.