At the very worst, you get a +1/+1 counter and some slight card advantage, and at best, you get to seriously delay your opponents own game plans by having them choose not to feed the Shredder over playing good cards themselves
The author changed directly Mox Opal and Oko, Thief of Crowns for Uro, Titan of Nature's Wrath and Ice-Fang Coatl
It gives you the flexibility of having a permanent and non-permanent effect, oftentimes where the Adventure supports its associated spell
If you play in two Prerelease events, you'll receive a velvet pouch while supplies last, perfect for holding all those crystal counters
At the beginning of your end step, if there are six or more permanent cards in your graveyard, transform Exdeath
Dealing damage to your opponents on attack or getting a buff on your creatures is huge, and having all of this on a Gev is a good start for a Commander deck