Nature's Spiral

Regrowth recurs anything and Eternal Witness staples the effect to a body; this narrows the scope to a single category and lets the restriction do the pricing. Any permanent comes back, but never an instant or sorcery, and that one exclusion is the whole bargain. It cannot rebuy a counterspell or a burn spell, so it stays clear of the spell-recursion engines that draw scrutiny to green's flashback-adjacent tools, while still answering anything that resolves and sticks to the battlefield: a removed creature, a shattered artifact, a destroyed enchantment, a sacrificed planeswalker, a fetchland you would rather not lose for good. That permanent-only window is what justifies the rate. Regrowth costs the same and grabs anything, which is precisely why this card had to give something up to share the line; trading "any card" for "any permanent" is the cost of staying at this end of the toolbox rather than the other. The sorcery speed reinforces the role. This is graveyard maintenance on your own turn, not a combat-trick rebuy or an instant-speed ambush, so it rewards a deck stocked with permanents worth getting back rather than one looking to recur reactive spells. It sits in the value tier of green recursion: the spell you reach for when the thing you need is something that was always going to stay once it returned to the field.