It boosts its shipmates according to how many times it (or another friendly commander) has been cast from the command zone, so it can attack, die, then get recast from the command zone to fight again
The first three have no special versions, Lavinia is in retro and is a new white border in MYB2, and Omnath has a textless promo to spar with
If you control two Traveling Chocobos, a land or Bird you control entering causes abilities to trigger three times, not four
The only downside to these cards is that they are easy targets for removal, and once removed, your source of card draw is gone
It's notably more rigid than most clones though, since it only copies your opponents' creatures
When flipped, the Seismic AssaultSeismic Assault ability will help make use of your unneeded lands, and provide even more gas to boot