Then theres New Blood, a very specific card that lets you take control of a creature an opponent controls, but is one of the few ways to permanently steal creatures without access to red or blue mana
Creature - Merfolk Detective Nick Valentine, Private Eye Nick Valentine can't be blocked except by artifact creatures
Three Brain Control can be used for either fetching a material for a tribute or stealing a boss monster for the win
-6: Exile all cards from all graveyards, then create a 1/1 white Spirit creature token with flying for each card exiled this way
Post-production damage is not a misprint
Plus, for a rundown of all the cards across the set and where you can find them, check out the Collecting Dominaria United article, which includes details on the Lost Legends cards