We're sort of hoping for a clarifying update from Wizards on the ban policy - and we'll update this guide if and when that happens
You can keep changing what card it is, so long as you have the mana to pay for its effect
Thatd be a clunky playable as is, but Scour also pulls an artifact out of your graveyard, so its a tutor that also nets you another card
This will make a lot more cards in the archetype viable and makes for all-in but powerful swingy equipment deck and a more aggressive, tempo focused version
The story of this amazingly rare card goes like this: The Shichifukujin Dragon was designed by Wizards Senior Lead Designer Mark Rosewater to commemorate the opening of the Duelists' Convocation International Tournament Center in Tokyo, Japan
This is a big creature late -- albeit one that doesn't really give you 6 mana's worth of value -- and you can throw it away early for a land, which is necessary sometimes