Jozxyqk#
I know that, generally speaking, you may untap with Guruhi are the Land after
equipping with Vast Wealth.
I also know that, when using Magic of the Smith, you may still untap with
Guruhi Are The Land even if you do not find a piece of equipment.
So, I assume the answer to this question is "yes".
But of course I was thinking about it:
Lumumba has Vast Wealth.
Lumumba takes the Vast Wealth action.
The first piece of equipment in my library is a Kali's Fang (and therefore
burns, since it is not equippable by Lumumba).
Can Lumumba play Guruhi Are The Land now, to untap?