But without a Maui on board, you are giving up a lot of tempo to activate the Shapeshift ability
For example, if youre building a deck around Urza, Lord High Artificer, you probably want a ton of cheap artifact creatures you can tap for mana, and then big heavy hitters you can cast with his second ability and all of that mana you generate
It gives your commanders Protection from everything at instant speed
FYI: "Tournament-legal cards have a width x height measurement of 2.5x3.5, or 63.588.9mm. When it comes to the thickness, non-foil cards are about 0.012, or 0.305mm, thick. Foil cards, on their end, are a bit thicker as they have an extra layer on top of the card that creates that shiny, holographic look. When it comes to the corners of Magic cards, theyre rounded at a radius of about 0.125, or 3mm."