Marauding Blight-Priest

Whenever you gain life, each opponent loses 1 life.

Corrupted Conviction

As an additional cost to cast this spell, sacrifice a creature.
Draw two cards.

Whenever this creature attacks, defending player loses 1 life and you gain 1 life.

Whenever another creature enters, you gain 1 life.

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

Whenever this creature attacks, each opponent loses 1 life and you gain 1 life.

Whenever another creature you control enters, you gain 1 life.

Whenever you gain life, put a +1/+1 counter on this creature.

Exile target creature you control, then return that card to the battlefield under its owner's control.
Draw a card.

At the beginning of your upkeep, you may gain 1 life.

This land enters tapped.
When this land enters, it deals 1 damage to target opponent.
{T}: Add {W} or {B}.

This land enters tapped.
When this land enters, you gain 1 life.
{T}: Add {W} or {B}.

Flying
Whenever another creature you control enters, you gain 1 life.

Flying
Lifelink (Damage dealt by this creature also causes you to gain that much life.)