Tomonoshin will be unrestricted, and Obstruct put to 1! Check out the details on the official site.
Purgatory Hymn, "Tune of Cursed Endless Battles"
■ [Set] ■ When a monster with "Purgatory Knights" in its card name on your field is destroyed, put the top card of your deck into the drop zone, and you gain 1 life. ■ You may only [Set] one "Purgatory Hymn, "Tune of Cursed Endless Battles"" on the field.