You can cast commanders, foretell cards, or suspended cards and it will work, as will proliferate effects or +1/+1 counter synergies
From his Call of Cthulhu days of needing to put mist or haze or fog in nearly everything, taking that experience and moving it to a magical ability that removes memory is an easy translation
While a very powerful spell that's brilliant for a go-wide deck, the high mana cost of Biorhythm, and the fact that it will sit in your hand, a dead card, for most of the game, has some suggesting it would now be fine in the format
Look for cards that reward you for casting a bunch of artifacts like Sai, Master Thopterist and Vedalken Archmage to complete the puzzle
Arwen, Weaver of HopeArwen, Weaver of Hope is like Renata, Called to the HuntRenata, Called to the Hunt, but much better
Couldnt: Commander has no sideboard (except for Companions ), so this wont work, but modifying this card so that it would search for lands from your deck seems like it would be missing the point