The main idea behind these mechanics is that theyll incentivize players to interact more with each other, instead of the traditional 1v1 MTG gameplay, often adding benefits to attacking, forging new allies, or teaming up to attack the strongest player at the table
Their value comes from a perfect storm of immense power and extreme scarcity, hailing from a time of tiny print runs

1 Zhulodok, Void Gorger 1 Omarthis, Ghostfire Initiate 1 Kozilek, the Great Distortion 1 Abstruse Archaic 1 Calamity of the Titans 1 Desecrate Reality 1 Flayer of Loyalties 1 Rise of the Eldrazi 1 Skittering Cicada 1 Ugin's Mastery 1 Darksteel Monolith 1 All Is Dust 1 Endbringer 1 Endless One 1 It That Betrays 1 Matter Reshaper 1 Oblivion Sower 1 Ugin, the Ineffable 1 Ancient Stone Idol 1 Duplicant 1 Endless Atlas 1 Forsaken Monument 1 Hangarback Walker 1 Investigator's Journal 1 Kaldra Compleat 1 Mazemind Tome 1 Metalwork Colossus 1 Mirage Mirror 1 Myriad Construct 1 Mystic Forge 1 Perilous Vault 1 Phyrexian Triniform 1 Solemn Simulacrum 1 Soul of New Phyrexia 1 Steel Hellkite 1 Stonecoil Serpent 1 Transmogrifying Wand 1 Arch of Orazca 1 Blast Zone 1 Bonders' Enclave 1 Geier Reach Sanitarium 1 Mirrorpool 1 Ruins of Oran-Rief 1 Scavenger Grounds 1 Sea Gate Wreckage 1 Shrine of the Forsaken Gods 1 Tyrite Sanctum 1 War Room 1 Burnished Hart 1 Geode Golem 1 Lightning Greaves 1 Meteor Golem 1 Sol Ring 1 Thought Vessel 1 Thran Dynamo 1 Unstable Obelisk 1 Reliquary Tower 1 Rogue's Passage 1 Artisan of Kozilek 1 Bane of Bala Ged 1 Not of This World 1 Spatial Contortion 1 Titan's Presence 1 Warping Wail 1 Crashing Drawbridge 1 Dreamstone Hedron 1 Everflowing Chalice 1 Fireshrieker 1 Hedron Archive 1 Mind Stone 1 Ornithopter of Paradise 1 Palladium Myr 1 Scaretiller 1 Suspicious Bookcase 1 Worn Powerstone 1 Arcane Lighthouse 1 Eldrazi Temple 1 Forge of Heroes 1 Guildless Commons 1 Mage-Ring Network 1 Temple of the False God 1 Tomb of the Spirit Dragon 1 Urza's Mine 1 Urza's Power Plant 1 Urza's Tower 15 Wastes Eldrazi Unbound Tokens 1 Thopter // Construct token 1 Spirit // Eldrazi Scion token 3 Manifest // Eldrazi Scion tokens 1 Manifest // Phyrexian Germ token 1 City's Blessing // Construct token 3 Phyrexian Golem // Ox tokens Thopter // Construct Spirit // Eldrazi Scion Manifest // Eldrazi Scion Manifest // Phyrexian Germ City's Blessing // Construct Phyrexian Golem // Ox Enduring Enchantments Anikthea, Hand of Erebos and Narci, Fable Singer are traditional foil cards

"Pikachu used Thunder Shockzap!" Turn 1 (You) : You draw a Grass Energy, attach it to Bulbasaur, and play a Pok Ball to get Charmander for your Bench