Blast Magician (UTR) (FET-EN020) - Flaming Eternity 1st Edition

Each time you or your opponent activates 1 Spell Card, put 1 Spell Counter on this card. Remove any number of Spell Counters to destroy 1 face-up monster on the field with an ATK equal to or less than 700 points x the number of removed Spell Counters.