Journey to Eternity {1}{B}{G}
Legendary Enchantment — Aura
Enchant creature you control
When enchanted creature dies, return it to the battlefield under your control, then return Journey to Eternity to the battlefield transformed under your control.
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Atzal, Cave of Eternity
Legendary Land
(Transforms from Journey to Eternity.)
{T}: Add one mana of any color.
{3}{B}{G}, {T}: Return target creature card from your graveyard to the battlefield.