Spellbinding Soprano

Oracle text

Whenever this creature attacks, instant and sorcery spells you cast this turn cost {1} less to cast. Encore {3}{R} ({3}{R}, Exile this card from your graveyard: For each opponent, create a token copy that attacks that opponent this turn if able. They gain haste. Sacrifice them at the beginning of the next end step. Activate only as a sorcery.)