Your opponents play with their hands revealed. Sacrifice Seer's Vision: Look at target player's hand and choose a card from it. That player discards that card. Activate only as a sorcery.
Toxic 1 When Seething Skitter-Priest enters the battlefield, creatures you control and creature cards in your hand perpetually gain "When this creature dies, create a 1/1 colorless Phyrexian Mite artifact creature token with toxic 1 and 'This creature can't block.'"
Whenever one or more creature cards are put into your graveyard from anywhere, venture into the dungeon. This ability triggers only once each turn. Create Undead — Whenever you complete a dungeon, return target creature card from your graveyard to the battlefield.