(The same is true for card types that don't appear in most games, like plane or scheme.) You can't choose a subtype, such as creature types like Spider or Hero, artifact types like Treasure or Food, or enchantment types like Aura
Long gone are the times we were shoehorning Muck Drubb into the deck
It's not wrong in the sense that it sucks
It was there the two brothers discovered that the seal was being held by a Thran artifact known as a powerstone
Akin to colorless card draw, you may find our write up on colorless tutor cards helpful as well
The card cast from Lurrus isn't exiled, so as long as it doesn't get removed from the graveyard through other means, you can always recast any spell you play with Lurrus on your next turn