mtg commander decks edhrec Starter The 10 Most Fun Commanders

If there are no other creatures in play, do I have to return Double Header to my hand

This is just one more than many single things like target recursion spells such as Karmic Guide, but they choose so they'll always choose the worst for you, unless you play politics

It isn't so much about this being better than Mizzium Mortars or Oblitering Bolt but more about how much better your deck looks when you can replace a two drop with a one drop and lose almost nothing in doing so

Legacy doesnt have room for many four-mana planeswalkers that dont end with the Mind Sculptor, and Kaya doesnt do anything against combo decks