Hina, Curse Eating God.

{t}, Sacrifice an Aura Curse you control: You gain 3 life and {b} {g}

{t}, Sacrifice a land you control: Create a copy of that land, except it becomes an Aura Curse enchantment attached to target player. The Aura Curse has "Whenever this land is tapped, it deals 4 damage to the enchanted player."