Rakdos Carnarium

This land enters tapped.
When this land enters, return a land you control to its owner's hand.
{T}: Add {B}{R}.

Polluted Bonds

Whenever a land an opponent controls enters, that player loses 2 life and you gain 2 life.

This creature has first strike during your turn.
Whenever an opponent draws a card, this creature deals 1 damage to them.

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

This land enters tapped.
When this land enters, exile target player's graveyard.
{T}: Add {B}.

Whenever an opponent draws a card, this enchantment deals 1 damage to that player.