Skilled White Magician (SBCB-EN007) - Speed Duel: Battle City Box 1st Edition

Each time a Spell Card is activated, place 1 Spell Counter on this card when that Spell Card resolves (max. 3). You can Tribute this card with 3 Spell Counters on it; Special Summon 1 "Buster Blader" from your hand, Deck, or GY.