I've missed playing with Adventure and the obnoxious Lucky Clover in standard and with how historic has been looking I didn't think the Temur version would be fast enough to deal with the hard aggro of Muxus and Mono Red in general. I've played a lot of Genesis Ultimatum since the Ikoria came out, so I wanted to try something different.

The deck is built around facing aggro, but since I've played it I've faced Mono Blue Tempo, Doom Foretold decks and Azorious Flyers. I've got around a 50% WR playing in 8 games, which could easily be better. The probably with the deck is finding answers, the land feels pretty consistent, but only having Shatter the Sky as the only board clear does punish the deck. The ideal situation would be to have the  Lucky Clover early and hope to have a Bonecrusher or a Giant Killer to deal with the early threats. Then playing out the Whirlwind for card draw and hope that in the next few turns you can stabilse against aggro. The Omen of the Sea is there just for value with the Yorion. Unfortunately, Yorion offers a few things. You've got the value in blinking Elspeth Conquers Death and the occasional exhausted Planeswalker. But a 4/5 body is something that can just slow opponents down until you can stablise and control the game. The Jwari Disruption does feel pretty awkward, it can be good to counter something early or save it for something bigger, but having access to the land is certainly nice for when you get "Magic the Gathering'd" out of the game.

The sideboard is a pick and mix, the deck wants to draw cards and there is a lot of it. Because of that Jace find it's way into the sideboard as a Win Con. There are then two different staples of control, the Nine Lives combo and the Rule of Law combo. If you have at least on Lucky Clover out it should be easy enough to grab one combo and play it out the turn after, but that isn't specifically the plan I had when I built the deck. They are more situational pieces that can close the game, same with all the cards in the sideboard. The Chandra is there to wipe or get emblems to win quicker, Inspired Ultimatum just to draw and gain life, Ugin because why not and some more board clears.  

For cards to consider, I just went with more counterspells to make the deck more controlling and a Teferi for the card draw and the synergy with the amount of cards the deck wants to draw with his -8 would give a lot of value. Perhaps some card draw could be added to the sideboard if you go down this route instead. I would use Wrath of God instead of Shatter the Skies but I don't have a full playset crafted. Whilst you can get card draw from a Yorion or Bonecrusher on the board, with Whirlwind and both Narsets there should be enough anyway.

It's a fun deck, it can be tweaked easily to dealing with the current historic meta. But judging my the meta, I think the deck should be considered a T3 deck and with alterations can be a T2, it can beat T1 decks as long as you have a good hand, but with the 80 cards that Yorion gives you access too I think it would be hard to maintain the initial jank that makes the deck fun to play.