Definitely possible! Colorless Commander decks like Karn, Silver Golem and Kozilek, Butcher of Truth can show us the ropes towards building a solid Ulamog, the Ceaseless Hunger deck.
Likewise, people ask, can you use a companion as a commander?
Commander players, even though you don't have sideboards, you can still get in on the fun. Each Commander deck may include a chosen companion. All the other companion cards [except for Lutri] will be legal, and subject to color identity and singleton rules. If a card is your companion, it is effectively a 101st card.
Also Know, what cards can you use as a commander? When choosing a commander, you must use either a legendary creature, a planeswalker with the ability to be commander, or a pair of legendary creatures or planeswalkers that both have partner. The chosen card or pair is called the commander or general of the deck.
In this way, can Planeswalkers be used as commanders?
Created and popularized by fans, Commander is a casual format in which each player's deck is led by that player's commander—traditionally a legendary creature, although a few planeswalker cards outside of this product state that they can also be a deck's commander.
Can Parhelion II be a commander?
It's stated that way in the Comprehensive Rules: 903.3. Each deck has a legendary creature card designated as its commander. Of course, Commander is a casual format, so if your playgroup likes your idea of a Parhelion II Commander deck, they might allow it as a house rule.