Evilswarm Exciton Knight [MP14-EN224] Secret Rare 198 is destroyed by battle with

is destroyed by battle with an opponent's attacking monster

you can Tribute 1 monster to have this card gains ATK equal to the original ATK of the Tributed monster until the End Phase of this turn

give control of the equipped monster to your opponent

When this card is Normal or Special Summoned: You can add 1 "Speedroid" monster from your Deck to your hand

you can return all Dragon-Type Monsters from your Graveyard to your Deck

Evilswarm Exciton Knight [MP14-EN224] Secret Rare 198 is destroyed by battle withSet: 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).