(If a player controls 2 or more, they must send some to the GY so they only control 1.) During your Main Phase: You can add from your Deck to your hand 1 "Umi", 1 "Kairyu-Shin" Spell/Trap, or 1 "Sea Stealth" Spell/Trap
Accomplished Automaton Ambitious Aetherborn Angel of Invention Cayth, Famed Mechanist Cultivator of Blades Elegant Edgecrafters Glint-Sleeve Artisan Highspire Artisan Iron League Steed Marionette Apprentice Marionette Master Maulfist Squad Peema Outrider Propeller Pioneer Visionary Augmenter Weaponcraft Enthusiast
Still she walked on." The Nameless Knight of Summer Number 23 Language English Legal Formats Brawl, Commander, Competitive Brawl, Historic, Legacy, Modern, Pioneer, Timeless, Vintage Not Legal Formats Alchemy, Pauper, Standard Rulings (3/19/2021) A player's "opening hand" is the hand of cards the player has after all players have taken mulligans
The creatures that manifest from black mana embody these characteristics
Any of the popular cost reducers or cheaty mechanics like cascade pay dearly for the mana savings