Whenever you discard a card, you may exile that card from your graveyard.
, : Draw a card, then discard a card.
: Put a card exiled with this artifact into its owner's graveyard. If it's a land card, create a Treasure token. If it's a nonland card, create a 2/2 black Rogue creature token.
, 
: Draw a card, then discard a card.
