When combined with zero-cost artifacts and cards that untap lands such as the two cards on this list that do that simply upon being cast it was rather trivial to produce massive amounts of mana to fuel a huge Stroke of Genius aimed at your opponent, winning you the game on the spot

Scientists Aarakocra Sneak Abduction Aberrant Mind Sorcerer Aberrant Researcher Abhorrent Oculus Abjure Aboleth Spawn Aboshan's Desire Aboshan, Cephalid Emperor Absorb Energy Absorb Identity Abstract Performance Abstruse Interference Academy Drake Academy Elite Academy Journeymage Academy Loremaster Academy Researchers Academy Wall Access Denied Accumulate Wisdom Accumulated Knowledge Acid Rain Acquire Acquisition Octopus Adaptive Training Post Adarkar Windform Admiral's Order Adric, Mathematical Genius Advanced Hoverguard Advanced Stitchwing Adverse Conditions Advice from the Fae Aegis Sculptor Aegis Turtle Aeon Chronicler Aerial Caravan Aerial Doombot Aerial Formation Aerial Guide Aerie Worshippers Aeromoeba Aeronaut Tinkerer Aether Channeler Aether Gale Aether Gust Aether Meltdown Aether Spike Aether Swooper Aether Syphon Aether Theorist Aether Tradewinds Aether Tunnel Aetherize Aetherplasm Aethersnipe Aetherspouts Aethersquall Ancient Aethertide Whale Agency Outfitter Agent of Kotis Agent of Raffine Agent of Treachery Agoraphobia Air Bladder Air Elemental Air Marshal Air Servant Air-Cult Elemental

I especially like swiping commanders with this since changing control doesnt send the commander to the command zone, forcing the impacted player to waste a removal spell on their commander before recasting it
Mana Value 1: Dizzy Spell If your goal is to use Transmute to tutor for a one-drop, then Dizzy Spell is your only option
Bracket Three decks meet the following restrictions: No more than three cards from the Game Changers list No extra turn cards intended to be chained together No early-game two-card combos No mass land destruction Bracket Four: Optimized The gloves come off in Bracket Four