MArcomage

If the facilities are the same are these generated at random? In a game I'm currently playing a highest facility card targeted my bricks and then 3 turns later a lowest facility card also targeted my bricks. I'm confused!

Yes, if there are two or more equal facilities, one is picked up randomly.

That explains a lot. I used a Merchant Ship card once and it gave me +1 quarry but doubled production of gems! Thanks for the clarification.

It sounds like you already understand this, but since you talked about targeting bricks in the first post, I just wanted to clarify.

When something looks for lowest/highest facility, the amount of the resources you have doesn't influence the decision. Likewise, when something targets a lowest/highest resource, it doesn't take the value of the facility into consideration.

There's no tiebreaker. It really is an even chance among the valid targets.

This can also be confusing when a keyword effect changes the value of a facility since that change occurs AFTER the card effect is concluded.