The five main planeswalker cards of the set all have borderless versions, in addition to several other cards from the main set
Legendary Creature - Human Wizard Color tag templates(None) Ethereal Investigator Flying When this creature enters, investigate X times, where X is the number of opponents you have
But what are fun new cards without Commanders to lead them
They work against mill in a similar fashion: Shuffling your library back into your deck against a mill deck is equivalent to resetting your life total to 20, 40, or whatever against a more standard Magic deck attacking your life total
Partners let you customize your Commander deck's color identity and strategy, but they also work just fine as part of the maindeck
Again, you could have up to three Room cards at once, meaning you could have access to up to twelve Rooms