mtg modern horizons 3 commander decks Magic the Gathering: Collectors Edition Deck Set (Set of 4) frame card of rarity Rare or higher and 1 Traditional Foil alt Horizon of Progress | Modern

If you are playing a blue deck, you should have four copies of Brainstorm in your deck

Yes on all counts, with one important note about intellectual property

Not all shapeshifters are all creature types, just the ones that are also changelings

The elves and elementals found by Nissa, both of which have a great number of options to choose from, just go into your hand, and the rest of the cards don't go to the graveyard, so opponents feel less threatened by your commander

Im all in for testing this one

By paying a loyalty counter to use Heart of Kiran as a creature rather than crewing it, the player genuinely gets the impression that a Planeswalker is walking across this plane