Your search for "Forgotten Cave 246" revealed the following:
Forgotten Cave (C18) from Commander 2018, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Noah Bradley Card Text:Forgotten Cave enters the battlefield tapped.T: Add R.Cycling R (R, Discard this card: Draw a card.)
Forgotten Cave - C18 Reprint (PLST) from The List, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Noah Bradley Card Text:Forgotten Cave enters the battlefield tapped.T: Add R.Cycling R (R, Discard this card: Draw a card.)