Dark. Spellcaster/Pendulum/Effect. 7. Pendulum Effect. You can remove 6 Spell Counters from your field; Special Summon this card from your Pendulum Zone, then destroy cards on the field, up to the number of cards you control that you can place a Spell Counter on, and if you do, place Spell Counters on this card equal to the number of cards you destroyed. You can only use this effect of "Endymion, the Founding Sorcerer Supreme" once per turn.. . Monster Effect. Once per turn, when a Spell/Trap Card or effect is activated (Quick Effect): You can return 1 card you control with a Spell Counter(s) to the hand, and if you do, negate the activation, and if you do that, destroy that card, then you can place Spell Counters on this card equal to the number of Spell Counters that were on the returned card. If this card has a Spell Counter(s), it cannot be destroyed by your opponent's card effects, also your opponent cannot target it with card effects. When this card with a Spell Counter is destroyed by battle: You can add 1 Normal Spell from your Deck to your hand.