Some ways to think it, but it always depends on your build and your board: If you dont have another Mothman in the deck, you should use Nessie first, because if you hit Mothman, you will not be able to have it on board
The hinge was the part I had to think through the most
Urza, Chief Artificer Probably the best affinity commander in the game, Urza, Chief Artificer focuses on curving out with cheap artifact creatures like Esper Sentinel, Ethersworn Canonist, and Master of Etherium to make Urza itself cheaper
in 1 of your Decks, you can only add 1 more copy across other Decks
This five-color legend is essentially six cards in one, letting you pick the exact tool you need for a given situation
That meant that if you tapped Mana Crypt on your upkeep you didn't take any damage, so decks that could use the mana then could get two mana per turn for free