3 Level 4 DARK monsters
Must first be Xyz Summoned OR Special Summoned by the following method.
● You can Special Summon this card (from your Extra Deck) by using a Rank 4 "lswarm" Xyz Monster from your Graveyard, except "Evilswarm Charon" as an Xyz Material. You can only Special Summon "Evilswarm Charon" once per turn this way.
Once per turn: You can detach 1 Xyz Material from this card and send the top 4 cards of your Deck to the Graveyard, then target Special Summoned monsters your opponent controls, up to the number of "lswarm" monsters sent to the Graveyard by this effect; destroy them. When this card in your possession is destroyed by your opponent's card (either by battle, or by card effect) and sent to your Graveyard: You can target 1 Level 4 "lswarm" monster in your Graveyard; Special Summon it, and all copies of that card from your Graveyard.