This loop does put the creature card into the graveyard so you'll be able to make an arbitrarily large Fungus army
UGIN, THE SPIRIT DRAGON Played in 1% of Decks on EDHRec I was shocked to my core when I saw that this insanely strong Planeswalker is only in 1% of all the decks on EDHRec
With the creature-land, you can always turn Wizards Lightning into at least a Lightning Strike by tapping the Mutavault to activate itself
Good news: the Natures Claims out of your sideboard provide a clean answer to all of these options
You see the price before you build
Overall, this card is a draw engine, and if you build around it, the strategy is perfectly playable, even if it's not to most players' taste, especially as playing cards exerted can be risky against more aggressive decks