Your search for "Shadow-Imprisoning Mirror GLAS-EN070" revealed the following:
Shadow-Imprisoning Mirror - GLAS-EN070 - Common - Unlimited from Gladiator's Assault Unlimited, available at 401 Games Canada. Rarity: Common Card Text:When the effect of a DARK monster activates on the field or in the Graveyard, negate it.
Shadow-Imprisoning Mirror - GLAS-EN070 - Common - 1st Edition from Gladiator's Assault 1st Edition, available at 401 Games Canada. Rarity: Common Card Text:When the effect of a DARK monster activates on the field or in the Graveyard, negate it.