Your search for "Slip Out the Back 99" revealed the following:
Slip Out the Back (CLU) from Ravnica: Clue Edition, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Zara Alfonso Card Text:Put a +1/+1 counter on target creature. It phases out. (Treat it and anything attached to it as...
Slip Out the Back - The Hobbit: He Who Walks Unseen (Foil) (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Peter Diamond Card Text:Put a +1/+1 counter on target creature. It phases out....