You can Tribute Summon this card face-up by Tributing 1 Magical Musket monster. During either player s turn, you can activate Magical Musket Spell Trap Cards from your hand. Once per turn, during your opponent s End Phase: You can draw cards equal to the number of Magical Musket Spell Trap Cards you activated this turn while this card was face-up on your field. You can only use this effect of Magical Musket Mastermind Zakiel once per turn.