Tomonoshin will be unrestricted, and Obstruct put to 1! Check out the details on the official site.
Sunken Seabed Ruins
■ During your main phase, when a size 3 or greater monster enters your field, if this card is in your drop zone, you may pay 1 life. If you do, cast this card from your drop zone. ■ [Set] ■ 3 or greater damage dealt to you by monster effects are reduced to 0. ■ When monsters on your field attack, put the top card of your deck into your gauge. This ability only activates once per turn.