Mox Diamond
Artifact
If Mox Diamond would enter the battlefield, you may discard a land card instead. If you do, put Mox Diamond onto the battlefield. If you don't, put it into its owner's graveyard.
: Add one mana of any color.
Legalities
- brawl: banned
- commander: legal
- legacy: legal
- modern: legal
- pauper: legal
- pioneer: banned
- standard: banned
- vintage: legal
Rulings
- 2008-05-01:
If you don’t discard a land card, Mox Diamond never enters the battlefield. It won’t trigger abilities that look for something entering the battlefield, and you won’t get the opportunity to tap it for mana.