Defense Grid
Artifact
Each spell costs more to cast except during its controller's turn.
Legalities
- brawl: banned
- commander: legal
- legacy: legal
- modern: legal
- pauper: legal
- pioneer: banned
- standard: banned
- vintage: legal
Rulings
- 2004-10-04:
The additional cost can be reduced by effects that reduce costs, such as Sapphire Medallion.
- 2006-05-01:
In Two-Headed Giant, spells don’t cost extra on your own turn.