Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.) Legendary Creature - Human Breya's Apprentice When this creature enters, create a 1/1 colorless Thopter artifact creature token with flying
Like all formats that tap into most printed Magic cards and rely on a local community for support, you have to begin experiencing things yourself to understand it

Decklist: Marina Vendrell EDH Rooms Marina Vendrell | Illustration by Magali Villeneuve Commander (1) Planeswalker (1) Creature (22) Archon of Sun's Grace Doomwake Giant Dryad of the Ilysian Grove Eidolon of Blossoms Enduring Vitality Entity Tracker Fear of Sleep Paralysis Ghostly Dancers Gremlin Tamer Herald of the Pantheon Inquisitive Glimmer Jukai Naturalist Mesa Enchantress Overlord of the Hauntwoods Sanctum Weaver Setessan Champion Starfield Mystic Sythis, Harvest's Hand Thassa, Deep-Dwelling Victor, Valgavoth's Seneschal Yorion, Sky Nomad Zur, Eternal Schemer Instant (3) Ephemerate Path to Exile Swords to Plowshares Sorcery (3) Cultivate Dance of the Manse Kodama's Reach Enchantment (29) Central Elevator / Promising Stairs Charred Foyer / Warped Space Cramped Vents / Access Maze Dazzling Theater / Prop Room Defiled Crypt / Cadaver Lab Derelict Attic / Widow's Walk Dollmaker's Shop / Porcelain Gallery Enchantress's Presence Experimental Lab / Staff Room Funeral Room / Awakening Hall Glassworks / Shattered Yard Greenhouse / Rickety Gazebo Leyline Binding Meat Locker / Drowned Diner Mirror Room / Fractured Realm Moldering Gym / Weight Room Polluted Cistern / Dim Oubliette Restricted Office / Lecture Hall Roaring Furnace / Steaming Sauna Secret Arcade / Dusty Parlor Smoky Lounge / Misty Salon Spiked Corridor / Torture Pit Sterling Grove Strength of the Harvest / Haven of the Harvest Surgical Suite / Hospital Room Ticket Booth / Tunnel of Hate Underwater Tunnel / Slimy Aquarium Unholy Annex / Ritual Chamber Walk-In Closet / Forgotten Cellar Artifact (6) Arcane Signet Chromatic Lantern Fellwar Stone Haunted Screen Keys to the House Sol Ring Land (35) Breeding Pool Command Tower Exotic Orchard Forest x2 Hall of Heliod's Generosity Hallowed Fountain Indatha Triome Island x2 Jetmir's Garden Ketria Triome Marsh Flats Misty Rainforest Mountain Overgrown Tomb Path of Ancestry Plains x2 Polluted Delta Raffine's Tower Raugrin Triome Reliquary Tower Sacred Foundry Spara's Headquarters Stomping Ground Swamp Temple Garden Temple of Deceit Temple of Enlightenment Temple of Malady Temple of Malice Temple of Silence Valgavoth's Lair Zagoth Triome This Marina Vendrell EDH deck is mostly a Go-Shintai deck, but you have rooms instead of shrines

I even have an image
Then those changes all happen simultaneously
Phill_Hellmuth has been on this list for a while and it always looks like an interesting take on the Grixis Breacher variants