March of Swirling Mist

Instant{X}{U}

As an additional cost to cast this spell, you may exile any number of blue cards from your hand. This spell costs {2} less to cast for each card exiled this way. Up to X target creatures phase out. (While they're phased out, they're treated as though they don't exist. Each one phases in before its controller untaps during their next untap step.)

Colour identity Blue

In short

March of Swirling Mist has 5 listed printings; the most valuable is the Promo Pack printing from PNEO at US$6.19 on TCGplayer's market price. Prices below are the cheapest in-stock listing in the United States.