Your search for "Labyrinth Tank MRD-091" revealed the following:
Labyrinth Heavy Tank - MP24-EN257 - Ultra Rare - 1st Edition from 25th Anniversary Tin: Dueling Mirrors Mega Pack 1st Edition, available at 401 Games Canada. Rarity: Ultra Rare Card Text:You can Normal Summon this card without Tributing. Cannot attack...
Labyrinth Tank - MRD-091 - Common - 1st Edition from Metal Raiders 1st Edition, available at 401 Games Canada. Rarity: Common Card Text:Giga-Tech Wolf + Cannon Soldier
Labyrinth Tank - MRD-091 - Common - Unlimited from Metal Raiders Unlimited, available at 401 Games Canada. Rarity: Common Card Text:Giga-Tech Wolf + Cannon Soldier
Labyrinth Tank - MRD-EN091 - Common - 25th Anniversary Edition Unlimited from Metal Raiders (25th Anniversary Edition), available at 401 Games Canada. Rarity: Common Card Text:Giga-Tech Wolf + Cannon Soldier
Labyrinth Tank - 43 - Rare is available at 401 Games Canada! You can find lots of other Yugioh Singles products as well as more great items from YuGiOh Bandai OCG: 2nd Generation (Japanese)!