A good knowledge base turns common queries into quick fixes, letting players solve routine issues without waiting in a queue
Im really most interested in the Anthem effect, though, as it can be combined with two other prominent pumping effects available to many Pirates
As a monster he controls would be destroyed by battle, Yami Diva activates his face-down "Cubic Defense", preventing its destruction and letting him Special Summon two monsters from his hand with the same name
Creatures have 'summoning sickness' when they enter the battlefield
Twenty years down the line and we are as good as there with some of these MDFCs, Shatterskull being the best rather comfortably

Mirror Mastery Commander (1) Planeswalker (1) Creature (24) thersnipe Animar, Soul of Elements Artisan of Kozilek Avatar of Fury Baloth Woodcrasher Chartooth Cougar Conundrum Sphinx Deadwood Treefolk Edric, Spymaster of Trest Elvish Aberration Faultgrinder Fierce Empath Hydra Omnivore Intet, the Dreamer Krosan Tusker Magmatic Force Magus of the Vineyard Nucklavee Rapacious One Simic Sky Swallower Spitebellows Trench Gorger Valley Rannet Veteran Explorer Instant (9) Brainstorm Tribute to the Wild Colossal Might Invigorate Spell Crumple Electrolyze Ray of Command Prophetic Bolt Hunting Pack Sorcery (13) Collective Voyage Hull Breach Cultivate Kodama's Reach Firespout Ruination Explosive Vegetation Chain Reaction Death by Dragons Vengeful Rebirth Disaster Radius Call the Skybreaker Savage Twister Enchantment (3) Vow of Flight Vow of Lightning Vow of Wildness Artifact (6) Sol Ring Armillary Sphere Gruul Signet Izzet Signet Lightning Greaves Prophetic Prism Land (41) Command Tower Evolving Wilds Forest x13 Fungal Reaches Gruul Turf Homeward Path Island x7 Izzet Boilerworks Kazandu Refuge Mountain x8 Rupture Spire Simic Growth Chamber Temple of the False God Vivid Crag Vivid Creek Vivid Grove Commanders, Themes, and Strategy Mirror Mastery is the Temur deck and does classic Temur things like duplicate spells and cast big creatures
