This land has a truly unique ability that allows you to start the game with it already on the battlefield if youre not the starting player, giving you a huge tempo advantage
GR Gold Rare Altergeist Marionetter X LIGHT Level 4 [ SpellcasterEffect ] ATK 1600 DEF 1700 When this card is Normal Summoned: You can Set 1 "Altergeist" Trap directly from your Deck
Its a bit slow for most Commander decks, but find ways to synergize with the land token or enchantments and it makes up for that and then some
In a couple of months or years, those cards might be available for significantly less cash, and in the meantime you can almost certainly get something close enough for mere pennies on the dollar
Just look at all the Gobbies with activated abilities to see how powerful the haste keyword as well as cost reduction can be in the right scenario
If an adventurer card ends up in exile for any other reason than by exiling itself while resolving, it won't give you permission to cast it as a non-Adventure spell