Explosive Singularity

As an additional cost to cast this spell, you may tap any number of untapped creatures you control. This spell costs {1} less to cast for each creature tapped this way.
Explosive Singularity deals 10 damage to any target.

Card Details:
Set: Kamigawa: Neon Dynasty Promos
Collector Number: 140s
Artist: Liiga Smilshkalne