Flash (You may cast this spell any time you could cast an instant.) Flying (This creature can't be blocked except by creatures with flying or reach.) When this creature enters, you may pay any number of times. When you pay this cost one or more times, put that many +1/+1 counters on this creature, then up to that many other target artifacts, creatures, and/or enchantments phase out (While they're phased out, they're treated as though they don't exist. They phase in before you untap during your untap step.).