Should I use implosion in a single target? Explosive Potential cases, you should not use Implosion single target, unless the enemy is about to die. Use that global cooldown to cast a generator instead.
How do you use implosion demonology?
How long do wild imps last? Wild Imps may last for up to 20 seconds, though this is unlikely while in combat. They will disappear after 5 shots, Fel Firebolt has a 1.5s cast time, so approximately 7.5s during combat. At level 60 they have an additional 20 seconds and 1 shot. Demonic Tyrant can increase their duration.
When should you use implosion? Implosion is dmg neutral but not dps. It just crams the dmg into one global. So if a boss like Shriekwing is about to immune, burn implosion to get max value. If a boss has a weakness phase like Sludgefist then burn implosion right before it ends to max out what you can grab.