This card aggressively benefits from knowing what the scenario is going to throw at you. This is always somewhat true with cards that reference minions, but it's more true here. Some scenarios explicitly throw multiple minions at you when you advance from villain I to II or II to III. Some scenarios surge minions or have them summon others. Because this card is set up in advance, having this at all but one or two threat gone can take a bad moment and negate it by taking away the sudden minion swarm.

Just don't use it in a Sinister Six fight.