Have you accepted RNGesus into your life?
Merry Christmas and welcome to my deck primer! I'll go through the basic lines of play and mention some upgrades to consider. I was pleasantly surprised by how easily you can make it play fun and "le tOtes RaNdum" or switch to a more focused and ruthless approach. Let's get started!
GAMEPLAN
At first glance the strategy seems pretty simple and wacky. Flip coins, do stuff sometimes, pass the turn. You can certainly play it this way and have a good time; there are cards I'll mention in the "Notable Cards" that are really one-of-a-kind and fun. I would argue that your perspective needs a little shifting to unlock the full potential of the deck, however.
I would recommend treating this deck as a pseudo-Voltron deck. The coin flipping cards can be viewed as tools to beef up Okaun and swing massive damage with little warning. In my playtesting I was surprised by how frequently Okaun grew to be a one-shot kill. It takes three successful flips to get Okaun to lethal commander damage. This doesn't seem very likely, but if you consider a few subtle things the odds start stacking heavily in your favor:
1) Okaun and Zndrsplt's abilities both trigger on any coin flip success, not just your own. This means you can use spells which force multiple opponents to flip coins to almost guarantee at least a couple successes.
2) If you have both commanders out (which I recommend prioritizing) you get at least two flips per turn. With each of their abilities granting reflips for successes you can quickly get a lucky turn where they make a lethal Okaun by themselves.
3) Krark's Thumb. This is only situationally helpful since it's a single card out of the whole deck, but this card will dramatically increase the effectiveness of flips. Many of the suggested upgrades are centered around getting this in your hand consistently. Playing Zndrsplt early can help dig for this card through his draw ability as well.
Obviously, you'll get a feel for how the deck works for you and adjust as you play it a few times. In my playtesting it seemed that the best approach was to put out coin flip sources while ramping to cast Zndrsplt for card draw. Okaun should follow once you've drawn some protection or the board state allows for it. I can see value in rushing to cast Okaun as well if the board is not very developed and you see an opening, YMMV.
NOTABLE CARDS
Frenetic Efreet, Wirefly Hive. I wanted to mention these two cards first to further drive a point from earlier. At face value both of these cards are not good. Their true value comes from giving you flips to buff Okaun. Even better, these can be done at instant speed after blockers are declared for a nasty surprise.
Krark's Thumb This one is mentioned already and self-explanatory.
Thieves' Auction Probably the most chaotic card in the deck and the one I'm most excited to see played.
Warp World In the same vein as Thieves' Auction this card is pure chaos.
Fling Too many blockers? Just pump Okaun up and throw him at someone.
Chance Encounter Nearly impossible without Krark's Thumb but the ultimate flavor win.
SUGGESTED UPGRADES
MANA
The first and blandest suggestion for improving the deck is to fix the mana. The easiest change would be to substitute tapped lands for Training Center or Steam Vents. The deck is currently light on artifact ramp as well; adding some of your go-to mana rocks could help cast your very important commanders earlier.
THE THUMB
As mentioned earlier in the primer, Krark's Thumb is extremely helpful for this deck. Increasing the chance this ends up in hand can make a huge difference. Some suggestions: Gamble (XXXtra flavor bonus!), Tribute Mage, Fabricate, Muddle the Mixture
SUIT UP
This category contains cards you'd usually find in a Voltron deck. Anything to make Okaun scarier, harder to block, harder to remove, etc. Some all-stars for this category: Whispersilk Cloak, Rogue's Passage, Darksteel Plate.
THE THUMBLESS ONE
Krark, the Thumbless gets his own category. He's absolutely theme perfect. He improves the deck a ton. He was only left out due to budget and release timing.
THE ORB
Chaos Orb This card is incredibly expensive and not commander legal, so you will need to proxy and CHECK WITH YOUR POD BEFORE PLAYING IT. This card is the absolute embodiment of the deck though and I would recommend printing one out in case the group you're playing with gives you the okay.
Enjoy!
