If a creature attacks a planeswalker, that planeswalker's controller is the defending player
Main phase 1 provides the opportunity to deploy land cards and cast spells, establishing the foundation for subsequent actions
We also, with characters we were doing multiple times, wanted to express multiple different color identities
You can see this collector number on the bottom of each card, usually followed by a slash and the total number of cards in the set, excluding secret rares
Unlike a fog effect or a Teferi's Intervention, Masako can't protect you from attackers unless you have a board state to defend with - but you also get to pull the mother of all combat tricks on whoever attacked you
with no need to suffer through putting physical damage counters on Pokmon, no chance of giving your hand away by accident and not having to touch dirty cards in terrible condition, the GBC game already offers significant advantages over the real-life version