Force of Negation [Modern Horizons] Human Merfolk activate 1 "F

activate 1 "F

destroy all face-up monsters on the field with a different level than it

You can only activate 1 "Dinomorphia Domain" per turn

this card gains 1000 DEF for each "Batteryman AA" on your side of the field

You can only use this effect of "Backup Operator" once per turn

Force of Negation [Modern Horizons] Human Merfolk activate 1 "FSet: Modern Horizons Type: Instant Rarity: Rare Cost: {1}{U}{U} If it's not your turn, you may exile a blue card from your hand rather than pay this spell's mana cost. Counter target noncreature spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard. "Try, if you must."