Were going to be playing loose with the history and available technology of Magic to allow creatures and spells that would have required a lot of extra rules text to properly function in early Magic
Pay the converted mana cost of 5, and you take another turn after your first one
BPhillipYork: I think this can be broken, obviously for like tribal decks that make a ton of tokens that's a solid way to cheat out tons of better creatures
Gideon, Ally of Zendikar provides a second, widely played, and expensive card
This means that pairing them with Commanders like Urza, Lord High Artificer that can tap these Artifacts right before taking your turn can be quite an effective strategy
This multi-creature lord is a fun build-around, especially in Commander when you can technically turn it into a second commander via its companion ability