This land doesn't untap during your untap step if it has a depletion counter on it.
At the beginning of your upkeep, remove a depletion counter from this land.
: Add or . Put a depletion counter on this land.

This land enters tapped.
: Add or .
: Until end of turn, this land becomes a 2/2 black and red Elemental creature with ": This creature gets +X/+0 until end of turn." It's still a land.

: Add .

Lazotep Archway enters tapped.
: Add or .
Eternalize (And don't forget it still enters tapped!)

: Add .
, Sacrifice a creature: Add one mana of any color.
, , Sacrifice a Desert: Exile target creature card with mana value X from your graveyard. Create a token that's a copy of it, except it's a 4/4 black Zombie. Activate only as a sorcery.

Take a lesson on earthbending

When this boss enters, the bosses gain 5 life for each boss in play.

This land enters tapped.
, : Each opponent loses 1 life. Activate only if you control two or more black permanents.

This land enters tapped.
: Add or .

Learn to get stronger

Maximize Black Widow's deadly skill by granting deathtouch to your creatures.

At the beginning of your upkeep, mill ten cards.

Whenever chaos ensues, target player mills ten cards.

Fill your library

This land enters tapped.
: Add or .
, : Investigate.