The initiative is a designation a player can have (much like the monarch)
It has menace so it can get in for combat damage without too much trouble (assuming the board isnt too gummed up), and if it does it can sacrifice itself to pull in a creature from the top of your deck
The threat of popping a Time Bomb or The Moment means that some players wont commit to the board until they can deal with them but by then it might be too late
These include its rarity, cultural significance, market forces, online marketplaces, quality, condition, and the franchise's enduring popularity
It sits at $38 as things currently stand, and easily earns the title of most expensive Edge of Eternities card
This allows the game to frequently change worlds so as to renew its mechanical inspiration, while maintaining planeswalkers as recurrent, common elements across worlds