Suppose I have two Scatterbugs in play on the second turn of the game and it's my turn; can I use "Abnormal Outbreak" twice?
Yes, you can use it once for each Scatterbug you have in play during that turn.
Source: Forbidden Light FAQ (2018-04-20), TPCi Rules Team (2018-05-03)

Relevant cards

Note: All applicable cards may not be listed below.
SM6_5