Giant Fairy has become the poster child of what Lorcana can do creatively, by offering such a radical redesign for as famous a character as her
Sieges generally have an effect when they are cast, and then their owner picks a player to defend them and take control of them
Frankly, I would play this for it's first effect as is with all the mana rocks and Sol Rings in Commander
The problem is that the solution was shortsighted (understandably, as not many people in the mid 1990sincluding Wizards would have predicted that Magic would grow into what it is today) and everlasting
Banner of Kinship Banner of Kinship is a bonkers upgrade on Coat of Arms that is not global, and a hugely impactful anthem that mice, goblins and vampires and any wide tribe can destroy players with
The other caveat to Tameshi is that it cannot be in a mono-blue deck