You need to keep your artifact count up, but thats not that hard to do in modern Magic

Aang, Master of Elements Abrupt Decay Accursed Witch Advanced Reconstruction Aluren Animar, Soul of Elements Arcane Melee Archmage of Runes Armor Wars Artist's Talent Ballad of the Black Flag Ballyrush Banneret Baral, Chief of Compliance Bard Class Baron Strucker, HYDRA Overlord Because I Have Willed It Beluna Grandsquall Beluna Grandsquall Bilbo, Thief in the Night Bladegraft Aspirant Blood Funnel Bontu's Monument Bosk Banneret Brago's Favor Brighthearth Banneret Brisela, Voice of Nightmares Bronze Calendar Bureau Headmaster Call Forth the Tempest Captain Eberhart Case of the Ransacked Lab Cemetery Prowler Centaur Omenreader Chatzuk, Mighty Guitarist (playtest) Cheap Ass Cheering Fanatic Chimil, the Inner Sun Cid, Freeflier Pilot Cloud Key Collected Conjuring Commander Liara Portyr Council of the Absolute Cunning Nightbonder Danitha Capashen, Paragon Danitha Capashen, Paragon Daru Warchief Defiler of Dreams Defiler of Faith Defiler of Flesh Defiler of Instinct Defiler of Vigor Director Nick Fury Dirgur Focusmage Doc Aurlock, Grizzled Genius Dragonlord's Servant Dragonspeaker Shaman Dream Chisel Edgewalker Elderwood Scion Emerald Medallion Emet-Selch of the Third Seat Enthusiastic Mechanaut Epic Experiment Esper Etherium Sculptor Eye of Ugin Ezio Auditore da Firenze Ezzaroot Channeler Feeding Grounds Finale of Promise Fires of Invention Fleem, Goben's Creation

As a sorcery, you may pay the mana cost of a locked door to unlock it.) Illustrated by Cristi Balanescu Standard Legal Alchemy Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
In Pauper there are a number of decks that particularly like this effect, which well get into later
Legendary Land Color tag templates(None) Tomb Fortress This land enters tapped
Promo cards come from tournament prizes , movie tie-ins , box toppers , and brand collaborations like McDonalds