I mean you’ve used this in some fashion in Duel Links, probably.
Instructor: いさおし
Favorite Card: “Crystron Quan”
Deck: “Crystron” + “Thunder Dragon” Deck
2 Crystron Quan
3 Crystron Citree
2 Crystron Rion
2 Crystron Sulfefnir
2 Crystron Rosenix
2 Crystron Thystvern
2 Crystron Smiger
1 Crystron Prasiortle
3 Genex Undine
2 Genex Controller
3 Thunder Dragondark
2 Thunder Dragonroar
1 Thunder Dragonhawk
2 Psychic Wheeleder
1 Karakuri Gama mdl 4624 “Shirokunishi”
3 Called by the Grave
1 Different Dimension Deepsea Trench
1 Thunder Dragon Fusion
1 Harpie’s Feather Duster
1 Gold Sarcophagus
1 Foolish Burial
2 Cyrstron Impact
1 Thunder Dragon Colossus
1 Thunder Dragon Titan
1 Crystron Quandax
1 Crystron Ametrix
1 Shooting Riser Dragon
1 F.A. Dawn Dragster
1 Samurai Destroyer
1 Karakuri Steel Shogun mdl 00X “Bureido”
1 Karakuri Super Shogun mdl 00N “Bureibu”
1 Vermillion Dragon Mech
1 Trishula, Dragon of the Ice Barrier
1 Crystron Quariongandrax
1 Link Spider
1 Crystron Halqifibrax
1 Predaplant Verte Anaconda
Summary Notes:
• “Crystron” Tuners can Special Summon monsters from the hand, GY or banished cards to Synchro Summon. By using “Crystron Citree” and “Crystron Quan”, you’ll be able to repeatedly use the effects of “Thunder Dragon” monsters.
• “Crystron Rion” and “Thunder Dragon Fusion” return monsters to the Deck, allowing you to further repeatedly set up your monsters for Synchro Summons.
• With “Crystron Impact”, you’ll be able to repeatedly Special Summon the limited “Crystron Halqifibrax”.