magarena/release/Magarena/scripts/Fog.groovy

[
    new MagicSpellCardEvent() {
        @Override
        public MagicEvent getEvent(final MagicCardOnStack cardOnStack,final MagicPayedCost payedCost) {
            return new MagicEvent(
                cardOnStack,
                this,
                "Prevent all combat damage that would be dealt this turn."
            );
        }
        @Override
        public void executeEvent(final MagicGame game, final MagicEvent event) {
            for (final MagicPlayer player : game.getPlayers()) {
                game.doAction(new MagicChangePlayerStateAction(player,MagicPlayerState.PreventAllCombatDamage));
            }
        }
    }
]