Lifeleach

Target opponent loses 3 life and you gain 3 life.

Madness {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.)

Boseiju, Who Shelters All enters the battlefield tapped.

{T}, Pay 2 life: Add {C}. If that mana is spent on an instant or sorcery spell, that spell can't be countered.

{2}, {T}: Add {B} for each Swamp you control.

Spend only black mana on X.

Consume Spirit deals X damage to any target and you gain X life.

Extort (Whenever you cast a spell, you may pay {W/B}. If you do, each opponent loses 1 life and you gain that much life.)

Whenever you tap a Swamp for mana, add an additional {B}.

Target player loses 3 life. You gain 3 life and create three 0/1 colorless Eldrazi Spawn creature tokens. They have "Sacrifice this creature: Add {C}."

Unless target player pays {3}, that player loses 5 life and you gain 5 life.

Sorin's Vengeance deals 10 damage to target player or planeswalker and you gain 10 life.

Target player loses 4 life and you gain 4 life.

Target player loses 3 life and you gain 3 life.

({T}: Add {B}.)

Target player loses 2 life and you gain 2 life.

Retrace (You may cast this card from your graveyard by discarding a land card in addition to paying its other costs.)

Taste of Blood deals 1 damage to target player or planeswalker and you gain 1 life.

Target player loses 2 life and you gain 2 life.

Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)