Coalhauler Swine

Whenever Coalhauler Swine is dealt damage, it deals that much damage to each player.

Smoke Spirits' Aid

For each of up to X target creatures, create a red Aura enchantment token named Smoke Blessing attached to that creature. Those tokens have enchant creature and "When enchanted creature dies, it deals 1 damage to its controller and you create a Treasure token."

Smoke Blessing

Enchant creature
When enchanted creature dies, it deals 1 damage to its controller and you create a Treasure token.