Its less flexible than Greninjas Water Shuriken, which can do damage to any Pokmon, and requires a second in play, unlike Darkrai exs Nightmare Aura, but is still a significant damage boost every turn
It's still too strong even if it's reverted to being a restricted card
Trading in 3 mana (2 to activate and the opportunity cost of tapping Fountainport for colorless) and a token for one card isnt the most efficient sac-for-card trade that there is, but youre paying a tax for the modality of all the other abilities and the fact that its a land, not a creature or something
Better pack some infinite hand size effects
Command Tower is one of the most printed lands in all of Magic, so while you can get a copy for pennies, if you want the version with a Future Sight frame, you'll need to dig deep into your wallet to own this special foil version of Command Tower