You want cards entering and leaving your graveyard as often as possible to trigger Teval's ability
Whenever a Land enters the battlefield under your control, you get to add one mana of any color to your mana pool
Here we see Mickey as a steampunk detective, investigating some vibrant seaweed
Other cards found in the Ursulas Return set that feature this new approach to the Shift keyword include Flotsam & Jetsam, Entangling Eels - which a five strength/five health card that requires two cards to be discarded - Diablo, Devoted Herald, a card that requires players discard an action card, Li Shang, Valorous General - with players needing to discard a character card to Shift it in - Olaf, Carrot Enthusiast, a Sapphire card that can be Shifted by discarding an item card, and steel card Aladdin, Brave Rescuer: which requires that a location card be discard for it to be Shifted
Putting permanents directly into play doesn't count as casting a spell , so it doesn't progress the day/night cycle
Expert Interview Billy Lesnak