Mathmech Sigma is a Ultra Rare Tuner Monster card from Yu-Gi-Oh! (Battles of Legend: Monstrous Revenge, BLMR). Current market price: $0.20.
Ultra Rare
Battles of Legend: Monstrous Revenge (BLMR)
Card Text
If you control no monsters in the Extra Monster Zone, while this card is in your hand or GY: You can Special Summon this card, but banish it when it leaves the field, also you cannot Special Summon monsters from the Extra Deck for the rest of this turn, except Cyberse monsters. You can only use this effect of "Mathmech Sigma" once per turn. If this card you control is used as Synchro Material for a "Mathmech" monster, you can treat it as a non-Tuner.
