Your search for "Mono Synchron LC5D-EN026" revealed the following:
Mono Synchron - LC5D-EN026 - Rare - 1st Edition from Legendary Collection 5D's Mega Pack 1st Edition, available at 401 Games Canada. Rarity: Rare Card Text:If this card is used as a Synchro Material Monster, the other Synchro Material Monsters...