Critical Events are set up much like regular events, except that they replace the Villain character card with a variant character card, showcasing a different, more challenging story involving that Villain (or a foe that has enough in common with that Villain to use the same deck).

Like regular Villains, Critical Events can be played in normal or advanced mode,
but be careful! Critical Events can be quite challenging and require more strategic thinking than most regular Villains. Critical Events have Collection Limits and you’ll want to bring your best Collections to take on these scenarios. However, defeating Critical Events does not provide Collection rewards — saving the day is reward enough for true Heroes!