Rush of Dread

Spree is a static ability found on some modal spells (see rule 700.2) that applies while the spell on the stack. Spree means “Choose one or more modes. As an additional cost to cast this spell, pay the costs associated with those modes.”

Cards with the spree ability have a plus sign icon in the upper right corner of the card. This symbol is a visual reminder that this card requires an additional cost to be cast. This icon has no rules meaning.