Your search for "Mementotlan Bone Back VASM-EN010" revealed the following:
Mementotlan Bone Back - VASM-EN010 - Rare - 1st Edition from Valiant Smashers 1st Edition, available at 401 Games Canada. Rarity: Rare Card Text:If a face-up "Memento" monster(s) you control leaves the field because of an opponent's card: Special Summon...
Mementotlan Bone Party - VASM-EN009 - Ultra Rare - 1st Edition from Valiant Smashers 1st Edition, available at 401 Games Canada. Rarity: Ultra Rare Card Text:Destroy 1 "Memento" monster in your hand or face-up field, take 1 "Memento" monster from...