This one is a bit tricky because of value-over-replacement issues
Tokens act the same way as other permanents, but if they are removed from the battlefield (such as being returned to their owner's hand or sent to the graveyard), they cease to exist
Its called Jumpstart, and its a quick way to get into the game by removing the deck-building aspect of Magic: The Gathering, players skip the setup and jump straight into wild, themed games
Contact Other Plane is a very fun variant of 4 mana instant draw 2 that stays on flavor and involves die rolling
In a Two-Headed Giant game, events that cause a player to gain life affect each player separately, even though the result affects the teams life total
As an artifact-centric commander, he certainly opens up a lot of different build paths from Equipment voltron to artifact combo