Strixhaven: School of Mages/Trivia

Maro's Strixhaven Teaser

Mark Rosewater gave his traditional teaser with the following hints.^[1]

a white card with the rules text “draw three cards” — Secret Rendezvous
a planeswalker you know, but not as you know them — Professor Onyx (Liliana under a new identity)
a card featuring Paulo Vitor Damo da Rosa’s likeness (for winning the World Championship) — Elite Spellbinder Player Spotlight
a spell with three X’s in its mana cost — Crackle with Power
introduction of a new evergreen keyword — Ward (previously informally known as frost armor)
a red sorcery that you can have as many copies in your deck as you want — Dragon's Approach
a futureshifted card (appearing for the first time in a premier set other than Future Sight) — Grinning Ignus
an MDFC with the same card type on both sides that hasn’t been printed before — Rowan, Scholar of Sparks /// Will, Scholar of Frost (Planeswalker)
a card sharing something never shared before — Kasmina, Enigma Sage (Loyalty abilities of Kasmina to other Planeswalkers)
a cycle of enemy dual lands finishing off a ten-card cycle — the Reveal lands, like Shineshadow Snarl

“Search your library and graveyard for up to four creature cards with different names” — Ecological Appreciation
“Otherwise, put a study counter on it.” — Kianne, Dean of Substance
“Whenever a permanent entering the battlefield causes a triggered ability to trigger” — Strict Proctor
“untap each creature you control, then tap any number of creatures you control” — Augusta, Dean of Order
“Pay 10 life:” — Beledros Witherbloom
“Repeat this process six more times.” — Professor Onyx
“Pests, Bats, Insects, Snakes, and Spiders” — Blex, Vexing Pest
“Each mode must target a different player.” — Shadrix Silverquill
“Whenever an opponent activates an ability that isn’t a mana ability” — Flamescroll Celebrant
“where X is the number of cards in your library” — Body of Research

The full art for Ruxa, Patient Professor references the Muraganda Petroglyphs, a card with a similar mechanic.^[2]
Thanks to Matt Tabak, Embrose, Dean of Shadow is named after wrestler Dean Ambrose.^[3]
Heated Debate references the "I Studied the Blade"-meme
Strixhaven has the lowest number of monocolored cards (140) since Hour of Devastation (137), which is notably a small set. Only two other large sets have fewer in Battle for Zendikar (135) due to the Devoid keyword and Scars of Mirrodin (134) with the artifact theme. That said, all three of these sets have multiple cycles of colorless cards with monocolored color identities, which still marks Strixhaven as especially low. Conversely, it has the highest population of both hybrid cards (25) and multicolored cards in general (90) since Shadowmoor block.
The main set has one of the fewest number of enchantments since two in Mirrodin Besieged, with four. Incidentally, as both enchantments were Auras in Mirrodin Besieged, Strixhaven still has fewer Auras (Detention Vortex).
Strixhaven, at its release, was the most technically ambitious set on a printing technology basis. The land slot is replaced with the Mystical Archive with its three rarities, the DFCs are threaded with the rest of the rares and mythics, and the one-per-booster Lesson is occasionally rare or mythic, in which case the pack has another common. This puts Strixhaven with three more sheets than the average set.