follow me on twitter: @zenxacred
Just speculation for now.
The card art, number, and color matches the Promo card given with the new Sharp expansion released here in Japan. So, it seems safe to say that the ability may be the same.
only difference is that we only got 1 copy of it, not 5. Here is the card ability translated.
10. International Exhibition Hall. (P/tower). Cost 7.
- On your turn, you may choose to receive the benefit of another non-(purple tower icon) building you own in place of this one. If you do, return this building to the market stack.