I am struggling to build a tribal commander deck based around the Samurai. The main problem I am having is picking a commander. The commander must have the ability to buff/support my blockers and/or my creatures that get blocked. In addition it must have at white along with any other color. Is there anything out there that fits these requirements? Thanks for the help in advance.
I like Saskia the Unyielding as a Samurai commander. WBRG colors allow you to include any (or even every) Samurai printed so far. She also effectively upscales your damage to the entire table, which is quite important if you focus on bushido creatues which are balanced around dealing 20 damage to a player instead of 120 damage total. Alesha, who smiles at Death is another good option that is also more on flavor style-wise, but Samurais don't really benefit from entering the battlefield so her recursion value is limited.
One of the best aggro commanders is Gahiji, Honored One, because he also encourages others to attack each other it is not completely off theme if you think about it an Honor-themed deck. Green also many easier mana bases and access to recently printed shapeshifters.