When a player leaves a multiplayer game, any continuous effects with durations that last until that player's next turn or until a specific point in that turn will last until that turn would have begun
He delivers steady card advantage and token replacement, which makes Zombie decks smoother and more forgiving across long games
Each of these will cover what they had going for or against them so you can get a better picture of what to look for when considering your own purchases
With these shortcomings in mind, I generally reserve Beseech the Queen for 1-2 color decks, or any deck that can consistently access Urborg, Tomb of Yawgmoth early in the game
Since the Admiral reads, When Azure Fleet Admiral enters, you become the monarch, the trigger goes on the stack
Personally, I don't love the concept of Universes Beyond, and I know I'm not alone