Commander 2021/Trivia

Gavin's Commander 2021 Teaser
Gavin Verhey gave a teaser about cards in the decks with the following hints.
 * A mono-white card that creates Treasure Excavation Technique and Monologue Tax
 * Two cards which callback to the same mechanical reference as something in Future Sight Inspiring Refrain and Rousing Refrain (Chronomantic Escape, Festering March, etc)
 * A chef who makes Food tokens Gyome, Master Chef
 * A card that grants a bonus for casting a spell with a mana value of 10 or greater Zaffai, Thunder Conductor
 * A red creature with flash that casts an old and popular multiplayer spell when it enters the battlefield Radiant Performer</c> (Radiate</c>)
 * A card that creates face down, non-morph/manifest permanents Yedora, Grave Gardener</c> (Forest lands)
 * A permanent with an ability that begins with "Whenever a Kraken, Leviathan, Octopus or Serpents..." Spawning Kraken</c>
 * A card with "X is equal to your commander's mana value" Stinging Study</c>
 * A card with "Secretly choose an opponent" Guardian Archon</c>
 * A card that gives named counters that act like a popular multiplayer cycle Promise of Loyalty</c> (Vows)
 * A legendary creature with three different tap abilities Fain, the Broker</c>
 * A new card with the storm mechanic Fiery Encore</c>

And gave the following names of cards: