mtg commander decks walmart are Back inside Cubes and even visit favorite locations on the back of a Chocobo Magic: The Gathering Starter Commander

The final bit of text reads: If a legendary permanent or an artifact entering or leaving the battlefield causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time. Basically, Gandalf the White can do a lot of good stuff, and being a 4/5 isnt bad either

But the Ninth Doctors is perhaps the most offbeat

In that case, Clever Impersonator enters the battlefield as a 0/0 creature, and it's put into the graveyard immediately (unless something is raising its toughness above 0)

Im not terribly high on it because its just another aggro +1/+1 counters commander at the end of the day, but I get why others might run it