more importantly, getting two Triomes nets perfect mana every time
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Yennett, Cryptic Sovereign fully commits to the top-deck theme and actually grants a pay-off, so shes the most popular Esper topdeck commander (second most popular overall, at time of writing)

Akki Ember-Keeper Ambitious Assault Angler's Shield Araa, Heart of the Spider Arna Kennerd, Skycaptain Biorganic Carapace Chishiro, the Shattered Blade Costume Closet Envoy of the Ancestors Expanding Ooze Flame Discharge Generous Betty Wray Gloria, the Great Armorer Golden-Tail Trainer Goro-Goro, Disciple of Ryusei Guardian of the Forgotten Heir of the Ancient Fang Intermediate Chirography Invigorating Hot Spring Iron Man, Armored Avenger Kami of Celebration Kami's Flare Kodama of the West Tree Kumonosu, the Watchful Lethal Exploit Lethal Throwdown Lion Umbra Louvaq, the Aberrant (playtest) Mirror-Style Master Obstinate Gargoyle Ondu Knotmaster Ondu Knotmaster One with the Kami Orochi Merge-Keeper Remnant of the Rising Star SP Piloted by Peni Sephiroth, Fallen Hero Signature Slam Silver Sable, Mercenary Leader Skyward Spider Temperamental Oozewagg Thundering Raiju Towashi Towashi Guide-Bot Unforgiving One Upriser Renegade Walking Skyscraper Wonderweave Aerialist

This could realistically replace or come in addition to Sentinel's Eyes in Bogles, because it does functionally the same thing, but you don't need to escape to recast it from the graveyard later on
Since EDH format is flooded with lists that utilize treasure tokens, Sardian Avenger players will have lots of good games this season