Celestial Mantle is legal on many Arena formats, so why not try to repeatedly double your life total with some interesting interactions
Since Temur Adventures appeared seemingly out of nowhere to dethrone Azorius Control in Theros Beyond Death Standard, Ive fallen in love with the MTG Adventure archetype
Promise of Loyalty | Illustration by Sara Winters Group hug as a strategy employs cards that are designed to benefit other players , often in addition to benefiting you

Abdel Adrian, Gorion's Ward Acolyte's Reward Ancient Greenwarden Angelic Reward Artifact Ward Atraxi Warden Attentive Skywarden Auriok Bladewarden Bahamut, Warden of Light Baird, Steward of Argive Black Ward Bloodsworn Steward Blue Ward Boromir, Warden of the Tower Boseiju Reaches Skyward Broodwarden Cleric of the Forward Order Coward // Killer Coward // Killer Cowardice Crowd-Control Warden Cubwarden Curator's Ward Dawnhart Wardens Death Ward Denethor, Ruling Steward Duchess, Wayward Tavernkeep Edward Kenway Enduring Bondwarden Ephara's Warden Esior, Wardwing Familiar Essence Warden Fairgrounds Warden Faith's Reward Faramir, Steward of Gondor Fast Forward Final Reward Flickering Ward Gallows Warden Gandalf, Westward Voyager Gavi, Nest Warden Ghalma's Warden Ghost Warden Ghost-Lit Warder Goblin Coward Parade Goblin Wardriver Goldwarden's Helm Goldwardens' Gambit Green Ward Greenwarden of Murasa Grenzo, Dungeon Warden Guildscorn Ward Heart Warden Hixus, Prison Warden Homeward Path Honor's Reward Ifrit, Warden of Inferno Jadzi, Steward of Fate Jor Kadeen, First Goldwarden Kangee, Sky Warden Kavaron Skywarden Kin-Tree Warden Knight of the Skyward Eye Kopala, Warden of Waves Leonin Relic-Warder Liliana's Steward Littjara Glade-Warden Look Skyward and Despair Lukka, Wayward Bonder Lumengrid Warden Merry, Warden of Isengard Nemata, Primeval Warden

In this case, Mewtwo teams up with Mew, which according to the lore of the Pokmon world, should be quite unusual
Tier C - Get Some Air Freshener In Here If tier B contained decks that can provide value, but are not must buys, tier C is where I'm putting the decks I would not recommend