Welcome to Modern One-Drop Tribal. A modern version of my well received Historic Version, and this one is just as effective and consistent in the modern format.
Lets start off with the deck and the concept. Basically I really loved Wayward Guide-Beast ever since he was released. Many people saying the drawback is too much but when I got thinking, there is a way to make the drawback an upside. If you have a one land hand, you can play something in mainphase one, attack with Guide-Beast, pick up the land and play it mainphase two and play another card. (usually I play Guide-Beast turn 2 mainphase one or turn 1 and don't attack if I don't have any other creatures) In this scenario Guide-Beast ends up actually creating a mana, and is just a 2/2 trample, hate body for one... really strong. The deck also gets to cheat on mana by playing everyone's new favorite monkey, Ragavan, Nimble Pilferer. I've seen Ragavan be good in some videos and be ok in others. In this deck he is just extremely good. You get a good, aggressive body, and he essentially does what Guide-Beast does, which is creating a mana. Obviously he has the upside of stealing a good card to play and being able to dash into play for two mana, which is extremely relevant if we topdeck him a bit later in the game. Overall, these two one-drops allow us to cheat on lands a bit, down to 12 lands. The deck will almost always draw gas, making it very consistent at putting the opponent to the test.
On to the rest of the cards. Creatures are very important in this strategy, get in enough creature beats to let the spells finish them off. Ghitu Lavarunner is basically a 2/2 haste creature, we run Gut Shot and Mutagenic Growth which will help turn him on faster. Also a wizard which is relevant because of Wizard's Lightning. Everyone knows Goblin Guide, who also synergizes with Ragavan by removing lands off the top of people's decks to have a better chance of stealing a relevant card. Monastery Swiftspear is another popular burn drop and also a wizard. Soul-Scar Mage is another prowess wizard threat, our phyrexian spells helping boost their power on 0 mana.
Thats the creature plan, all good aggressive bodies. Onto the spells.
We obviously have Lightning Bolt. We run Light Up the Stage which might be important to cast if we don't draw two lands or one of our 8 mana creatures (Gut Shot helps turn it on). We also run Lava Spike as just a good burn spell that is good to cast mainphase 1 to activate prowess.
Last we have Lurrus of the Dream-Den which is very castable, as 66% of our lands come into play untapped for free to cast him easily. Also Ragavan helps cast Lurrus as well (what doesn't that monkey enable?).
The sideboard is mostly just cheap answers to different strategies. When I sideboard I usually will sideboard out Lava Spike as people will sometimes be bringing in Leyline of Sanctity. So we have Tormod's Crypt for graveyards and it costs 0 mana so fits in our plan, Alpine Moon for land strategies, Embereth Shieldbreaker for artifacts, Reality Hemorrhage for pro-red creatures, and Fury is a nice board clear against some decks or big creatures.
