Pack Rat can easily make copies of itself, so long as you have mana to spend and cards to discard
This will let you advance your strategy (whether that is winning, ending the game, or creating insane board states) better than almost any other option
You simply tell them how many cards you are submitting and they print off labels for each card and a master label for your entire submission

Aberrant Mind Sorcerer Abomination of Llanowar Accomplished Alchemist Advocate of the Beast Aether Herder Aftermath Analyst Ajani's Comrade Alisaie Leveilleur Allosaurus Rider Allosaurus Shepherd Alpha Guard Alphinaud Leveilleur Ambush Commander Aragorn and Arwen, Wed Arbor Elf Arcane Investigator Architect of the Untamed Argothian Elder Armorcraft Judge Armored Wolf-Rider Arwen Undmiel Arwen, Mortal Queen Arwen, Weaver of Hope Astarion, the Decadent Atomwheel Acrobats Attended Socialite Aurora Champion Ayara, First of Locthwain Ayara, Furnace Queen Ayara, Widow of the Realm Baeloth Barrityl, Entertainer Beast Whisperer Beast-Kin Ranger Beastcaller Savant Behemoth's Herald Belbe, Corrupted Observer Bennie Bracks, Zoologist Birchlore Rangers Blaring Recruiter Blightsoil Druid Bloodbraid Challenger Bloodbraid Elf Bloodline Shaman Bloom Tender Borderland Explorer Boreal Druid Boreal Outrider Boss's Chauffeur Boughside Wanderers Bramblewood Paragon Branchblight Stalker Brazen Upstart Briarblade Adept Brightwood Tracker Caller of the Claw Caller of the Untamed Canopy Tactician Cantankerous Keepers Carapace Forger Cautious Survivor Celeborn the Wise Celebrity Fencer Centaur's Herald Champions of the Perfect Chance-Met Elves Circle of Dreams Druid Circle of the Moon Druid Citanul Stalwart Civic Wayfinder Cloakwood Swarmkeeper Coiling Oracle Compleated Huntmaster

An additional difficulty for us was that most of the creature cards are dedicated to depicting the students and faculty of Strixhaven
Avacyn was the artificial angel protector of Innistrad, defending humanity from the monsters that lurk in the night