Defense Grid

#13

Artifact

Each spell costs more to cast except during its controller's turn.

It lights up the sky, beckoning enemies only to repel them.

Legalities

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Rulings (2)

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.