IC

Enchant creature

Whenever enchanted creature deals damage, Guilty Conscience deals that much damage to that creature.

Whenever another creature enters the battlefield, untap Midnight Guard.

Your life total can't change. (You can't gain or lose life. You can't pay any amount of life except 0.)

Enchant creature

Enchanted creature has "{T}: Create a 1/1 green Elf Warrior creature token."

Indestructible

As Stuffy Doll enters the battlefield, choose a player.

Whenever Stuffy Doll is dealt damage, it deals that much damage to the chosen player.

{T}: Stuffy Doll deals 1 damage to itself.

Volcano Hellion has echo {X}, where X is your life total. (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

When Volcano Hellion enters the battlefield, it deals an amount of damage of your choice to you and target creature. The damage can't be prevented.