When this creature enters, choose one —
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Open an AttractionA player may open an Attraction only during a game in which that player is playing with an Attraction deck (see rule 717, “Attraction Cards”).
To open an Attraction, move the top card of your Attraction deck off the Attraction deck, turn it face up, and put it onto the battlefield under your control.
An ability which triggers whenever a player opens an Attraction triggers when that player puts an Attraction card onto the battlefield while performing the instruction in the above rule. If an effect prevents that Attraction from entering the battlefield or replaces entering the battlefield with another event, that ability doesn’t trigger. (CR 701.51). (Put the top card of your Attraction deck onto the battlefield.)
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DestroyThe only ways a permanent can be destroyed are as a result of an effect that uses the word “destroy” or as a result of the state-based actions that check for lethal damage (see rule 704.5g) or damage from a source with deathtouch (see rule 704.5h). If a permanent is put into its owner’s graveyard for any other reason, it hasn’t been “destroyed.”
A regeneration effect replaces a destruction event. See rule 701.19, “Regenerate.” (CR 701.8) target Attraction. (It's put into its owner's junkyard.)