Infernal Flame Banshee (Quarter Century Secret Rare)

2 Level 4 monsters You can detach 1 material from this card; take 1 Pyro monster from your Deck and either add it to your hand or send it to the GY. If this card is banished and you control a Pyro monster: You can Special Summon this card, and if you do, it gains ATK equal to the number of your currently banished monsters x 100 until the end of this turn. You can only use each effect of "Infernal Flame Banshee" once per turn.