Seething Chaos

Create a red Chaos enchantment token with,
"At the beginning of your upkeep, sacrifice this
enchantment. When you do, deal 4 damage to
each creature."
Rebirth (Whenever you cast an instant or sorcery
spell that shares an instant or sorcery type with this
spell, you may pay this spell's converted mana cost.
If you do, return this spell from your graveyard to
your hand.)