Unholy Strength

This land enters tapped. T: Add B. Cycling B (B, Discard this card: Draw a card.)

Enchant creature Enchanted creature gets +2/+2 and has flying and vigilance. (Attacking doesn't cause it to tap.)

Whenever a player casts a black spell, you may gain 1 life.

Target opponent sacrifices a creature of their choice.

Enchant creature At the beginning of your upkeep, sacrifice a creature. Enchanted creature gets +3/+3 and has trample. Enchanted creature is a Demon Spirit.

Spend only black mana on X. Consume Spirit deals X damage to any target and you gain X life.

Flying Vigilance (Attacking doesn't cause this creature to tap.)

Enchant creature Enchanted creature can't attack or block.