Snuff Out

If you control a Swamp, you may pay 4 life rather than pay this spell's mana cost.
Destroy target nonblack creature. It can't be regenerated.

Bump in the Night

Target opponent loses 3 life.
Flashback {5}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Target player draws two cards and loses 2 life.

Protection from white
{B}: Order of the Ebon Hand gains first strike until end of turn.
{B}{B}: Order of the Ebon Hand gets +1/+0 until end of turn.

Changeling (This card is every creature type.)
Changeling Outcast can't block and can't be blocked.

Target creature gets -2/-2 until end of turn.

You gain X life and each opponent loses X life, where X is the number of Knights you control.

{3}: Jousting Dummy gets +1/+0 until end of turn.

Changeling (This card is every creature type.)

At the beginning of your upkeep, you lose 1 life unless an opponent has 10 or less life.