But it got me wondering: does it happen that there are any textual uses of the six basic land types [1] that are not intended to be about a basic land? For example, if a card happened to use the word “forestall”, perhaps you could do something fun with it?
Unfortunately, the Comprehensive Rules has anticipated your “cool hack” and is one step ahead of you:
612.2. A text-changing effect changes only those words that are used in the correct way (for example, a Magic color word being used as a color word, a land type word used as a land type, or a creature type word used as a creature type). An effect that changes a color word or a subtype can’t change a card name, even if that name contains a word or a series of letters that is the same as a Magic color word, basic land type, or creature type.
Unfortunately, the Comprehensive Rules has anticipated your “cool hack” and is one step ahead of you: