Each stadium card has its own rules
[4]: Each opponent chooses an artifact, a creature, an enchantment, and a planeswalker from among the nonland permanents they control, then sacrifices the rest
Just because a card doesn't seem like it has a place in the current meta doesn't mean it won't in the future
If you have a way to destroy or sacrifice a creature at instant speed, you can use this to massively buff an unblocked creature and push through for the win
Robin Hood, Champion of Sherwood usually costs five ink to play but if you already have another Robin Hood card out on the table - such as the new Robin Hood, Beloved Outlaw or Robin Hood, Capable Fighter - then youll be able to play this card for just three ink instead, thanks to its Shift keyword
The flexibility is the main reason to play this