Defender Whenever you cast an instant or sorcery spell, you may draw a card. If you do, discard a card. This ability triggers only once each turn.

When Drownyard Amalgam enters the battlefield, target player mills three cards. (They put the top three cards of their library into their graveyard.) {2}{U}: Drownyard Amalgam can't be blocked this turn.

When Undead Butler enters the battlefield, mill three cards. (Put the top three cards of your library into your graveyard.) When Undead Butler dies, you may exile it. When you do, return target creature card from your graveyard to your hand.

Target player draws two cards and loses 2 life.

This spell costs {1} less to cast if you control a Zombie. Tap target creature. It doesn't untap during its controller's next untap step. Draw a card.

Surveil 1. (Look at the top card of your library. You may put it into your graveyard.) Draw a card.

Surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.) Draw a card.

Destroy target nonartifact creature.

Counter target noncreature spell.

Counter target noncreature spell unless its controller pays {2}.

({T}: Add {U} or {B}.) Contaminated Aquifer enters the battlefield tapped.

Dismal Backwater enters the battlefield tapped. When Dismal Backwater enters the battlefield, you gain 1 life. {T}: Add {U} or {B}.

({T}: Add {U}.)

({T}: Add {B}.)

Return target creature card from your graveyard to your hand. Put a +1/+1 counter on up to one target Zombie you control. Flashback {3}{B} (You may cast this card from your graveyard for its flashback cost. Then exile it.)