Demonic forces suck all of your Wild Imps toward the target, and then cause them to violently explode, dealing (230% of spell power) Shadowflame damage to all enemies within 8 yards.
Implosion is a level 30 Demonology warlock talent.
Trivia
Both this spell and its title are inspired by the Hearthstone card Imp-losion. Added almost two years earlier with the Goblins vs Gnomes expansion, the card is a rare 4 mana warlock spell, with the text, "Deal 2-4 damage to a minion. Summon a 1/1 Imp for each damage dealt." The card was commonly used in decks such as Zoolock, aiming to swarm the enemy with a board full of cheap Demons.
Patches and hotfixes
Hotfix (2016-10-25): "Damage reduced by 20% in PvP situations."
Hotfix (2016-09-23): "Implosion (Talent) damage increased by 15%."
