There's some upside here if you end up pitching the card you just tutored, though as with Gamble, the best bet is to search for a card that works just as well from the graveyard as it does in your hand
Vehicle is an artifact type, not a creature type
You do end up with decks like Sparky Sparky Firebending and Earthbending Warriors
Morph is a very deep mechanic worthy of an entire column to describe its design, but as this article is already on the long side, I'll just say that the key to designing morph creatures is understanding that the mystery quality of the cards is very important
To help everyone keep track of day and night, many Innistrad: Midnight Hunt booster packs have this helper card that also reminds you of these rules
Lets start with Excalibur II I had to think about it for a bit, because Aettir and PriwenAettir and Priwen is a crazy card