Weve tried to make sure this list encompasses the many faces of Red, so lets dive in
Most of these can be cost-reduced, and these mostly feel like the standard dozen or so spells you see in Izzet decks: An Offer You Can't Refuse Cyclonic Rift Deflecting Swat Fierce Guardianship Flusterstorm Force of Negation Force of Will Lightning Bolt Mental Misstep Pact of Negation Pongify Snap Swan Song Ramp In addition to your lands and mana rocks, youve got stuff that makes you mana and/or Treasures: Dockside Extortionist, Simian Spirit Guide, Rite of Flame, and Strike It Rich
Shrine Tenders/Creatures (11) 1x Destiny Spinner 1x Doomwake Giant 1x Eidolon of Blossoms 1x Grim Guardian 1x Herald of the Pantheon 1x Jukai Naturalist 1x Satyr Enchanter 1x Setessan Champion 1x Starfield Mystic 1x Sythis, Harvests Hand 1x Weaver of Harmony These creatures either help you draw more cards, reduce the cost of your enchantments, and/or come with some extra effects
Same for sap-creators like Fists of Ironwood, Druidic Satchel, and Fungal Rebirth, which all have better versions of similar effects but feel like a better fit with Shroofus
Evolved from Froakie and Frogadier, Greninja can sit on your bench and still deal 20 damage to any of your opponents Pokmon every turn with its Water Shurikan passive ability