You could have a round robin matches where each player plays against each other player once, or set up a tournament where winners play each other until theres one player left standing

Abrupt Decay Advent of the Wurm Aethermage's Touch Arid Mesa Basilisk Collar Blade Splicer Blood Moon Boros Reckoner Broodmate Dragon Cackling Counterpart Call of the Herd Cruel Ultimatum Cyclonic Rift Damnation Damping Matrix Deadeye Navigator Death's Shadow Desecration Demon Evil Twin Extractor Demon Falkenrath Aristocrat Fiery Justice Gifts Ungiven Goblin Guide Grafdigger's Cage Hellrider Marsh Flats Mind Shatter Misty Rainforest Mizzium Mortars Niv-Mizzet, Dracogenius Obzedat, Ghost Council Phantasmal Image Primal Command Pyromancer Ascension Ranger of Eos Restoration Angel Scalding Tarn Scavenging Ooze Sever the Bloodline Simic Sky Swallower Stoic Angel Stony Silence Summoning Trap Sance Terminus Thragtusk Ulvenwald Tracker Venser, Shaper Savant Verdant Catacombs Wort, the Raidmother Zealous Conscripts Zur the Enchanter

Earthen Vessel is played in almost every deck in the game because of its ability to search for energy and Professor Sada's Vitality is arguably the most powerful supporter in the game, as it can energy accelerate and draw cards
Blue is not spoilt for choice on really above the curve monsters and so this sees play in decks where it doesn't have any specific role or synergy
For those that want to get involved on MTG Arena, the card style bundle and Ajani sleeve will be in the Arena shop for gems