Blast Magician

Level 4 FIRE/Spellcaster Effect Monster
1400 ATK / 1700 DEF

Each time a Spell Card is activated, place 1 Spell Counter on this card when that Spell Card resolves. You can remove any number of Spell Counters from this card, then target 1 face-up monster on the field with ATK less than or equal to the number of counters you removed x 700; destroy that target.

Rulings – Yugipedia

Printings:

Flaming Eternity: FET-EN020 (Super Rare) - 2005-03-01
Flaming Eternity: FET-EN020 (Ultimate Rare) - 2005-03-01
Structure Deck: Spellcaster's Judgment: SD6-EN014 (Common) - 2006-01-18
Dark Revelation Volume 3: DR3-EN140 (Super Rare) - 2006-11-25
Spellcaster's Command Structure Deck: SDSC-EN014 (Common) - 2009-03-31
Legendary Decks II: LDK2-ENY18 (Common) - 2016-10-06
Speed Duel: Streets of Battle City: SBC1-ENA04 (Common) - 2023-08-24

Prices:

Cardmarket: 0.11 €
TCGplayer: $ 0.06