Barrage of Expendables

{R}, Sacrifice a creature: Barrage of Expendables deals 1 damage to any target.

Martyr's Cause

Sacrifice a creature: The next time a source of your choice would deal damage to any target this turn, prevent that damage.

Enchant land
Enchanted land has "{T}, Sacrifice a creature: You gain life equal to the sacrificed creature's toughness."

Sacrifice a creature: Goblin Bombardment deals 1 damage to any target.

{2}, Sacrifice a creature: Weaponize the Monsters deals 2 damage to any target.

Sacrifice a creature: Regenerate target creature.

{1}, Sacrifice a creature: Search your library for a land card with a basic land type, put it onto the battlefield tapped, then shuffle.

{T}: Add {C}.
{T}, Sacrifice a creature: You gain 1 life.

{T}, Sacrifice a creature: Blasting Station deals 1 damage to any target.
Whenever a creature enters, you may untap Blasting Station.