I tried out a fairer Esper build in my Ten New Brews from last week, but the fair gameplan just wasn't robust enough to be relevant
But to answer the question, and maybe its a bit cheesy, but I think the most surprising reaction Ive seen is just how much players appreciate the little details of the series included, truly validating the effort the various teams put into the set

Grey Knight Paragon Hour of Reckoning Inquisitor Eisenhorn Inquisitor Greyfax Inquisitorial Rosette Knight Paladin Launch the Fleet Marneus Calgar Martial Coup Memorial to Glory Mind Stone Mortify Neyam Shai Murad Path of Ancestry Port Town Prairie Stream Primaris Chaplain Primaris Eliminator Reaver Titan Reconnaissance Mission Redemptor Dreadnought Sanguinary Priest Scoured Barrens Sicarian Infiltrator Sister Hospitaller Sister of Silence Sister Repentia Skullclamp Skycloud Expanse Sol Ring Space Marine Devastator Space Marine Scout Sunken Hollow Swords to Plowshares Talisman of Dominance Talisman of Hierarchy Talisman of Progress Terramorphic Expanse The Flesh Is Weak The Golden Throne Thunderhawk Gunship Thunderwolf Cavalry Tranquil Cove Triumph of Saint Katherine Ultramarines Honour Guard Utter End Vanguard Suppressor Vexilus Praetor Zephyrim NEXT: Magic: The Gathering Warhammer 40,000 Commander Deck Previews: The Ruinous Powers

It's an aura that gives creatures different stats and a few various keywords
Apart from the 6 basic lands, a Commander deck may not contain double cards and in the choice of cards for the deck you are also limited to the colors of your Commander
You need another because hes one of the best villains in Marvel." Representing RED is the WandaVision-evoking Scarlet, featuring a Mythic The Vision and Scarlet Witch together