Great Spell, Solution AT (C)

You may only cast this card during an attack on your opponent's turn and if you have a 《Plague》 item on your field. [Counter] Nullify the attack, and put this card into the soul of a 《Plague》 item on your field. Then, if it has three or more souls, draw a card. At the start of your turn, if this card is in the soul of a 《Plague》, deal 1 damage to your opponent!