Segmental Dragon

You can Normal Summon/Set this card without Tributing, but its original ATK/DEF becomes halved. Once per turn, if this Normal Summoned/Set card is on the field (Quick Effect): You can destroy this face-up card, and if you do, destroy all monsters in the Main Monster Zones with ATK less than or equal to the ATK this card had on the field.

Cyberse LIGHT Effect Monster 7 effect