Freerunning isnt as busted as it might seem, but its pretty powerful, and an Ezio EDH deck potentially has access to every assassin in the game
TL;DR: Land Tax can be treated like a cudgel, constantly searching for 3 basic lands, thinning your deck, and filling your graveyard
With no life loss and no tapped condition, they provide clean, efficient fixing for two-color decks that value simplicity and speed
In less than 1% of boosters, this slot is replaced with a traditional foil acorn Alchemy card
Sure, costing 5 does mean you can only run so many, unlike the Packmate which had Foretell, making it much easier to jam a bunch of them into your deck, but you should still value that first 1-2 copies pretty highly
Opponents of this card are usually concerned about new, powerful designs homogenizing the Commander format, and Archaeomancers Map is definitely an efficient enough card to be a talking point in that conversation