March of Swirling Mist (Kamigawa: Neon Dynasty)

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.)

NM - $5.00
LP - $4.00
MP - $3.00
HP - $2.00
DMG - $1.50