Ramiss The Mighty

Flying
Ramiss The Mighty gets +1/+1 for each different
color symbol in the mana cost of commanders
you control on the battlefield or in the command
zone. If you have all five colors in the mana cost
of commanders you control on the battlefield or
in the command zone, Ramiss The Mighty gains Indestructible
Partner (You may have two commanders if both have partner)