New Crystron Main Deck Monsters from Raging Tempest have been revealed! And one of them is the promo Crystron from Invasion: Vengeance: Special Edition!
水晶機巧－リオン Crystron Rion
Level 3 WATER Machine-Type Tuner Effect Monster
You can only use the effect of “Crystron Rion” once per turn.
(1) During either your opponent’s Main Phase or Battle Phase: You can target 1 of your banished non-Tuner monsters; Special Summon that monster, but its effects are negated, and if you do, immediately after this effect resolves, Synchro Summon 1 Machine-Type Synchro Monster, using that monster and this card only (this is a Quick Effect). The monsters used for that Synchro Summon are not sent to the Graveyard and are returned to their owners’ Deck instead.
水晶機巧－サルファフナー Crystron Sulfafnir
Level 5 WATER Machine-Type Effect Monster
You can only use the (1) and (2) effects of “Crystron Sulfafnir” once per turn.
(1) If this card is in the hand or Graveyard: You can discard 1 “Crystron” card from your hand other than “Crystron Sulfafnir”; Special Summon this card in face-up Defense Position. Afterwards, destroy 1 card you control.
(2) If this card on the field is destroyed (by battle or by card effect): You can Special Summon 1 “Crystron” monster from your Deck in face-up Defense Position.