Fivaviana, World Star

When Fivaviana enters create Frodolfo, a legendary 1/1 green Ewok creature token with haste.
Polimorf - {u}{u}{u}: Target creature you control loses all abilities and types and becomes a green Dinosaur with base power and toughness 6/6.
Healing Word - {t}{g}{g}: Regenerate target legendary creature.

Don't split the party (You can have four commanders if they all have Don't split the party.)