Journey to Eternity // Atzal, Cave of Eternity

The trick that makes this Aura worth playing is the death trigger you actively want to fire. Most reanimation asks you to wait for a creature to die on its own terms; here you spend three mana on a creature you control and then go looking for the kill, because the payoff is paid out the moment it happens. The enchanted creature comes back, the Aura flips into Atzal, and you own a permanent that produces any color while, more importantly, recurring creatures from your graveyard on demand. That second face is the real engine: a repeatable reanimation outlet welded to mana production, so the same permanent both ramps you toward the activation and powers it. The friction is that Atzal only arrives if the enchanted creature actually dies, so the whole package wants a sacrifice outlet to guarantee the transform rather than leaving it to combat math, and the creature you bring back wants to be one whose death triggered something on the way down. That alignment of incentives (you want your own creatures to die, you want a sacrifice engine, you want graveyard density) is why it slots into aristocrats and value-recursion shells so cleanly: it asks for exactly the pieces those decks already run, then turns a one-shot reanimation effect into a permanent one.