If Tezzeret's second loyalty ability causes a Vehicle to become an artifact creature, it doesn't count as "crewing" that Vehicle for any ability that would trigger off of a Vehicle becoming crewed
Squirrel Sovereign While Ive mostly been looking at these cards from a Commander perspective, I can see how absolutely bananas, crackers, and nuts a deck with multiple copies of Squirrel Sovereign can get
Eldrazi Confluence There's a pretty big jump up in quality with anything that came out post- Battle for Zendikar
Because youre gaining so much life, you can absolutely lean into the pain lands in this deck and run Mana Confluence, City of Brass, Horizon Canopy, Ancient Tomb, Brushland, Caves of Koilos and Silent Clearing
events, you automatically receive a mix of basic lands based on the packets you choose, balanced for the costs and activated abilities on the spells in your packets