It doesnt matter if its an enter the battlefield, combat, or activated ability, you get to double it up
They want to sell the maximum amount of cardboard, and lead/production times being what they are, its plenty reasonable to think that when the first one sold out so fast, they immediately moved to make sure the later Lairs would have more product for sale
Let me know your thoughts in the comments below or over in the official Draftsim Discord
They also have an image of Simon fashioned after the likeness of Jupiter, and another of Helena in the shape of Minerva
If the result matches one of the lit numbers on the side of all Attraction cards, it activates the printed effect - these can range in impact depending on rarity, which also affects how many numbers will trigger a visit
Each player puts the top two cards of their library into their graveyard