The Convincing General
{W}{U}{B}{R}{G}Legendary Creature — Shapeshifter
Changeling (This card is every creature type.) As the game begins, if this creature is your commander, choose two creature types. For the rest of the game, treat those two types like they're the same among your creatures and creature cards everywhere. {3}, {T}: Choose a creature type. Draw a card for each creature you control of that type.