It triggers whenever a creature with greater power, greater toughness, or both enters the battlefield under your control
At the end of the day, this is another unspecific, value pile 4-color commander
Power and combat aside, Zell is a mighty enabler for a lands matter deck, and though I can't picture slotting it into anything other than a landfall commander deck, it stands as a decent card as is
Cards like Boseiju, Who Endures, Arena of Glory, and Cori Mountain Monastery fulfill a similar role to MDFCs in that they provide a land with an additional or alternative mode so that you still have a way to spend your mana, even if you draw a bunch of lands
The Game The base game experience of Lorcana is a one-versus-one duel with each player using a minimum 60-card deck full of Character, Item, Action, and Song cards taken from the Disney movies many of us grew up with back in the day