
As the other reviewer said this card is printed for Luke and only him. His ability to play an event in a connected location is just so versatile. I've recently finished the Return to Night of the Zealot campaign on Expert with Luke and Zoe and Luke was definitely a lifesaver! Especially, in the last scenario he was able to set up a link between a ritual sight and another location in the woods to help Zoe skip the cultists! And he himself Shortcuted through the enemy. The deck I used arkhamdb.com
Inference: I wouldn't use the gates outside that mystic.
Moreover, I feel like Open Gate has such a synergy with Arcane Initiate.
And... A question: If an investigator with an enemy moves through a gate, will the enemy follow him to that location?