Crystron Eleskeletus (SUDA-EN041) - Supreme Darkness 1st Edition

1 Tuner + 1+ non-Tuner monsters
All monsters your opponent controls lose 500 ATK/DEF. You can only use each of the following effects of "Crystron Eleskeletus" once per turn. If this card is Synchro Summoned: You can add 1 "Crystron" card from your GY or banishment to your hand. If this Synchro Summoned card is destroyed by battle or card effect: You can Special Summon 1 "Crystron" monster from your GY or banishment.