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.)

Cumulative upkeep—Pay 1 life. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

At the beginning of each player's upkeep, that player sacrifices a green or white permanent of their choice.

Offspring (You may pay an additional as you cast this spell. If you do, when this creature enters, create a 1/1 token copy of it.)

When this creature enters, target opponent loses 3 life unless they sacrifice a nonland permanent of their choice or discard a card.

Enchant creature

At the beginning of the upkeep of enchanted creature's controller, that player loses 1 life.

Enchant creature

At the beginning of the upkeep of enchanted creature's controller, this Aura deals damage equal to that creature's power to that player unless they sacrifice another creature of their choice.

Enchant creature

Enchanted creature gets -2/-2.

At the beginning of the upkeep of enchanted creature's controller, that player loses 2 life.

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

Raid — At the beginning of your end step, if you attacked this turn, each opponent loses 3 life unless that player sacrifices a nonland permanent of their choice or discards a card.

At the beginning of each player's upkeep, that player sacrifices a nonbasic land of their choice.

Enchant land

At the beginning of the upkeep of enchanted land's controller, this Aura deals 1 damage to that player.

At the beginning of your end step, each player loses 4 life unless they sacrifice a nontoken creature of their choice.

At the beginning of your upkeep, each player discards a card. Each opponent who discarded a card that shares a card type with the card you discarded loses 3 life. (Players reveal the discarded cards simultaneously.)

At the beginning of your upkeep, if you have no cards in hand, sacrifice this enchantment and target opponent discards their hand.

Flying, vigilance

At the beginning of your end step, if you gained or lost life this turn, target opponent loses 3 life unless they sacrifice a nonland permanent of their choice or discard a card.