it's not a bonus.
OK, so it's not a bonus, which matches what the designer says in another thread:
Carl Chudyk wrote:
If there is no block, the building's effect is potentially applicable to each activity you do on your turn, as with the Ludus Saurus.
So if I understand correctly, if I have a completed Ludus Saurus and say two Exploration activities, then when I give an Exploration order, I do the following sequence three times:
transfer a card from my hand to my stock (as is normal for Exploration)
start a new building using a card from my stock as the foundation (thanks to Ludus Saurus not being an order bonus and therefore always active)
Is that correct? Do I really get to start a new building for each exploration order/activity? It seems excessive.