It has occured to me that dumping 200 butterflies into a losing combat situation will cause just enough of a ***** to everyone's a) internet b) framerate c) salem connection to constitute some form of unfair mechanic. Unless it's intended to have players going Hello Kity Island Adventure vs DBZ "UBER BUTTERFLY SWARM ATTACK!" on other players during raids, hindering any resource moving while an attacker could bash away cheerfully xD
But yeah after butterfly swarms kept getting dropped in boston, I noticed huge delay in game response time, followed by a crash, followed by my network adapter being so ***** that it had to reset itself and the DNS cache to even connect to other sites. Please investigate and ponder the possibility that freed butterflies do something other than linger, or adding a timer to releasing them properly vs a complete purging when they are dropped, a la ./stompbagofbutterflies *spit* "good riddance". Either way looks way too exploitable.