best black cards mtg modern found this on foundations check list perfect for commander mono decks BUT i can put 4 in quite CHEAP in modern on mana cost best rat cards mtg Amazon.com:

Ship it

However, it can be one of the strongest cards in the game in the right decks and under some circumstances, as it has the What A Mess ability that reads "During your turn, you may banish chosen Item of yours to play this character for free." Belle's ability is fantastic for Sapphire Lorcana decks because a lot of them run at least some Items, especially the 1-cost Pawpsicle in four copies

Again, his abilities are stackable, meaning he gives a bonus to goblins, and any other card that gives a bonus combines with it

This was turned into planeswalker Commander form in Daretti with a +2 to discard and draw up to two for recursion and then -2 to Goblin Welder