Advanced format ruling
Jar Robber
Card effect (current official text)You can only activate this card when "Pot of Greed" is activated. Negate the effect of the "Pot of Greed" and draw 1 card from your Deck.
Current rulings for this card are maintained by Konami.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Advanced forum — sourced change requests get reviewed.