Megiddo, Artificial Sun (TUS-073 N) [The Underworld of Secrets]

[Quickcast] J/resonators dealt damage by this card this turn cannot attack or block until end of turn. [Enter] This card deals 800 damage to each J/resonator your opponent controls. [Rest], remove an ice counter from a J/ruler you control: This card deals 800 damage to target J/resonator.