Cloud was an easy choice for the face commander of the deck, even before we settled on making the main playable character of each game the general first choice for each deck's commander
The back half, Itlimoc, Cradle of the Sun, taps for green mana equal to your creature count, which is exactly what Gaeas Cradle does
However, the problem with Jwari Shapeshifter in Commander is that while the cost is incredible (a mere one generic and one blue mana), the drawback iswell, significant
As I mentioned before, it is possible to open alt-frame / alt-art cards in a normal booster box, but since we don't know the distribution of these cards, we can't really bake them into the expected-value calculation
When you tap it, you put a time counter on it