Rethink
Instant
Counter target spell unless its controller pays , where X is its mana value.
Legalities
- brawl: banned
- commander: legal
- legacy: legal
- modern: legal
- pauper: legal
- pioneer: banned
- standard: banned
- vintage: legal
Rulings
- 2004-10-04:
The spell’s controller gets the option to pay when this spell resolves.