Ohran Frostfang is a lot of fun because it gives all of your attacking creatures deathtouch, which can turn an attack fatal very easily if Fynn is out
So I went with a brown deck
On the other hand, we have to provide enough mana fixing to allow players to play their three color cards, without making it so plentiful that there every deck can play all five colors easily
Infuse with Vitality and Back for More can keep Zangief or one of his comrades in the fight (its like pressing Continue when you lose a match), and staple ramps like Cultivate and Skyshroud Claim round things out because you cant do without some terrain landscaping in the ring
This also will enable either 1 or 2 shot kills with commander damage
5 Madame Null, Power Broker Legendary Creature Madame Null, Power Broker is a three-mana 1/3 legendary creature with deathtouch, but more importantly, whenever a creature you control enters, you may pay life equal to its power to place that many +1/+1 tokens on it