Dryad Arbor & Mutavault

[lebarion]

Someone fix my logic, please:

- Dryad Arbor is a land creature, with types forest and dryad
- So, there's a creature with type "forest"
- So, Mutavault's ability turns it into forest.
- So, I can tap Mutavault to add G, return him to my hand to Quirion Ranger, and so on.

[Tinefol]

Its simple, Forest is a land type and Dryad is a creature type. These don't overlap.

note: Comprehensive rules contain all used creature types. There's no Forest.