Xylira's Emerald Reversion

10th-level transmutation (Epic, Draconic)

Casting Time: 10 minutes Range: 500 miles Components: V, S, M (A seed from the original World Tree, watered with the caster's lifeblood) Duration: Permanent

Channeling the xenophobic and untamed will of Xylira the Emerald Dreamer, you declare war on civilization itself. This spell forcefully rewinds the evolutionary and technological clock of a massive region.

Every forged metal, cut stone, and constructed material within 500 miles rapidly decays. The area undergoes the following transformations:

Architectural Dissolution. Any nonmagical structure or object made of metal, stone, or wood within the radius crumbles into fertile soil over the course of 1 hour. Magical items and structures must succeed on a DC 30 Wisdom saving throw or suffer the same fate.

The Overgrowth. Hyper-accelerated flora erupts from the new soil. The entire radius becomes difficult terrain. Within 24 hours, the area is considered a "Primal Forest" where trees grow to heights of 300 feet.

Feral Devolution. Every humanoid within the radius must make a DC 30 Constitution saving throw. On a failure, the creature is permanently transformed into a primal version of its race. Its Intelligence and Charisma scores both become 3, and it loses the ability to speak or understand any language. It gains the multiattack action (two slams) and its alignment becomes Unaligned. A Greater Restoration cast at 9th level or a Wish spell can restore a creature's mind, but only if they are removed from the radius of the spell.

The Price. Your memories and identity are wiped clean. You are reborn as a CR 25 Plant creature (stats of a Solar but type is Plant) that acts as the guardian of the new wilderness. You possess no knowledge of your former life.