Skilled Blue Magician (SBCB-EN181) [Speed Duel: Battle City Box]

Each time a Spell Card is activated, place 1 Spell Counter on this card when that Spell resolves (max. 3). You can Tribute this card with 3 Spell Counters on it; Special Summon 1 "Gaia The Fierce Knight" monster from your hand, Deck, or GY. You can banish this card from your GY, then target 1 card you control that you can place a Spell Counter on; place 1 Spell Counter on it.