Evilswarm Exciton Knight [MP14-EN224] Secret Rare Ancient Prophecy Once per Turn Action -

Once per Turn Action - Remove a haunt counter from Ghostly Touch: Until end of turn

when an opponent's DARK monster activates its effect: You can detach 1 Xyz Material from this card

Destroy Helio's Mitre at the beginning of the end phase

using monsters from your hand as Fusion Material

prevent 3 of that damage and destroy Sigil of Protection

Evilswarm Exciton Knight [MP14-EN224] Secret Rare Ancient Prophecy Once per Turn Action -Set: 2014 Mega Tins Mega Pack Card type: Xyz Effect Monster Rarity: Secret Rare Attack: 1900 Defense: 0 2 Level 4 monsters Once per chain, during your Main Phase or your opponent's Battle Phase, if your opponent has more total cards in their hand and their side of the field than you do: You can detach 1 Xyz Material from this card; destroy all other cards on the field, also your opponent takes no further damage this turn (this is a Quick Effect).