Players have no maximum hand size. At the beginning of each player's draw step, that player draws an additional card, then discards a card.

At the beginning of your upkeep, each player discards a card.

Flying Whenever Hypnotic Specter deals damage to an opponent, that player discards a card at random.

Necrogoyf's power is equal to the number of creature cards in all graveyards. At the beginning of each player's upkeep, that player discards a card. Madness {1}{B}{B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Flying, deathtouch, lifelink Nighthawk Scavenger's power is equal to 1 plus the number of card types among cards in your opponents' graveyards.

At the beginning of each player's upkeep, that player discards a card at random.

Whenever an opponent discards a card, that player loses 2 life.

Whenever an opponent discards a card, Megrim deals 2 damage to that player.

At the beginning of each player's upkeep, that player discards a card.

Whenever a player casts a spell, that player discards a card.

Whenever an opponent casts a spell, that player loses 5 life unless they discard a card.

Each opponent discards two cards. If you control a Vampire, each opponent loses 2 life and you gain 2 life.

Each player discards three cards.

Target player discards two cards. Overload {1}{B} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")