Torment of Scarabs

At the beginning of your upkeep, each opponent loses 3 life unless that player sacrifices a nonland permanent or discards a card.

Enchant player

At the beginning of enchanted player's upkeep, that player exiles two cards from their graveyard.

At the beginning of each player's upkeep, that player may sacrifice a creature of their choice. If that player doesn't, they lose 5 life and you sacrifice this enchantment.

Enchant artifact

At the beginning of the upkeep of enchanted artifact's controller, this Aura deals 2 damage to that player unless they sacrifice that artifact.

At the beginning of each player's upkeep, that player sacrifices a nonland, nontoken permanent of their choice. If that player can't, they discard a card, they lose 2 life, you draw a card, you gain 2 life, you create a 2/2 white Knight creature token with vigilance, then you sacrifice this enchantment.

Enchant player

As this permanent transforms into Curse of Leeches, attach it to a player.

At the beginning of enchanted player's upkeep, they lose 1 life and you gain 1 life.

Daybound (If a player casts no spells during their own turn, it becomes night next turn.)