Your search for "ever-watching threshold 9" revealed the following:
Ever-Watching Threshold (C18) from Commander 2018, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Ravenna Tran Card Text:Whenever an opponent attacks you and/or a planeswalker you control with one or more creatures, draw a card.
Ever-Watching Threshold (SCD) from Starter Commander Decks, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Ravenna Tran Card Text:Whenever an opponent attacks, if they attacked you and/or a planeswalker you control, draw a card.