Kiora the Rising Tide looks like she would be outstanding in this deck, and she is fine, but again she somewhat underperforms compared even to the two mana looter dorks, which in turn tend to be considered more as filler most of the time
Most Voltron decks have the weakness of all their eggs going on their commander, but the card advantage Kotis generates patches that weakness fairly well
The ability to enter untapped makes it that much better
Although content specifics haven't been released, we know the four commander decks will be called: Aura of Courage, Dungeons of Death, Draconic Rage, and Planar Portal
Your opponents want to ensure each player gets at least one vote so they dont get a free permanent on the field, but you also want to make sure nobody draws too many cards
You can use them on anything gold can be, but there are some events that can only be entered with gems