Capacitor Stalker (MP18-EN105) [2018 Mega-Tins Mega Pack]

When this card is Normal Summoned: You can target 1 other Cyberse monster you control; while this face-up monster is on the field, that monster gains 800 ATK. If this card in the Monster Zone is destroyed by a card effect and sent to the GY: Each player takes 800 damage. You can only use this effect of "Capacitor Stalker" once per turn.