Enchantment

[IntoFire]

Is there an Enchantment that makes all land forests?

[InfinitiveDivinity]

I think {Gaea's Liege} and {Deepwood Elder} are about the closest you're gonna get.

[MuggyWuggy]

You can always use an alter text spell

[FlickerYourOwnIdentity]

{Prismatic Omen}