Vrains) The effects of these fairies can be oppressive and lethal Yu-Gi-Oh
They are also good for Stax, if you'd prefer a defensive stun strategy rather than a more offensive one

Scientists Aang's Defense Abandon Attachments Aberrant Abeyance Abomination of Gudul Abundance Abundant Growth Abzan Banner Abzan Beastmaster Academic Dispute Academy Elite Academy Raider Academy Wall Accelerate Accumulated Knowledge Aclazotz, Deepest Betrayal Acquisition Octopus Acrobatic Maneuver Action News Crew Adrestia Advancing the Spirit Adventure Awaits Adventurer's Airship Aegar, the Freezing Flame Aeon Chronicler Aerial Extortionist Aesi, Tyrant of Gyre Strait Aether Channeler Aether Spellbomb Aether Syphon Afflict Afterlife Insurance Agency Coroner Agent 13, Sharon Carter Agent Maria Hill Agent Venom Agent's Toolkit Aggressive Urge Agna Qel'a Agonasaur Rex Ahriman Air Nomad Legacy Airbending Lesson Airborne Aid Airship Crash Airship Engine Room Akiri, Fearless Voyager Akki Ronin Akki Scrapchomper Akoum Flameseeker Akroma's Blessing Akroma's Vengeance Aladdin's Lamp Alandra, Sky Dreamer Alania, Divergent Storm Alaundo the Seer Alchemist's Apprentice Alchemist's Vial Aleatory Alhammarret's Archive All-Seeing Arbiter Alms Collector Alphinaud Leveilleur Alquist Proft, Master Sleuth Altanak, the Thrice-Called Altar of the Wretched Amass the Components Amber Gristle O'Maul Ambitious Assault Aminatou, Veil Piercer

Capricious Efreet Look at what they make you give
4 Performapal Skullcrobat Joker Performapal Skullcrobat Joker is such a good card its been on the banlist since the PePe days and is still currently semi-limited
The reason Fusion-based decks arent usually competitive is because so much work must go into properly Fusion summoning the monster