Youre essentially running a Rakdos spellslinger deck here, so make sure to add plenty of draw and interaction
Luckily, those are only a part of the metagame
Roaring Moon ex decks tend to move fast and have a favorable match-up against Regidrago VSTAR, which was one of the top decks in last year's tournaments

Abundant Growth Animal Boneyard Annex Barbed Field Blight Blighted Burgeoning Buried in the Garden Caribou Range Caustic Tar Chamber of Manipulation Chronic Flooding Conquer Consecrate Land Contaminated Ground Convincing Mirage Corrupted Zendikon Crackling Emergence Crusher Zendikon Cursed Land Dawn's Reflection Debtor's Pulpit Discreet Retreat Earthlore Elvish Guidance Equinox Erosion Evil Presence Farmstead Fertile Ground Find the Path Flowering Field Footfall Crater Forbidden Lore Friendly Neighborhood Genju of the Realm Gift of Paradise Glittering Frost Goblin Caves Goblin Shrine Grafted Growth Guardian Zendikon Harmonious Emergence Hostile Realm Hot Springs Kudzu Leafdrake Roost Lingering Mirage Lithoform Blight Living Terrain Lush Growth Market Festival Mystic Might New Horizons Nissa's Zendikon Noxious Field Nylea's Presence Orcish Mine Overgrowth Phantasmal Terrain Pooling Venom Psychic Venom Racecourse Fury Remarkable Readings Sea's Claim Security Blockade Sheltered Aerie Shimmerwilds Growth Skygames Spawning Grounds Spreading Seas Squirrel Nest Steam Vines

The opponent gains life equal to that creatures power, but that trade-off rarely matters
Despite that, he faced a similar problem to Serra Paragon when he was released, in that the comprehensive rules didnt quite match up to what Henzie does