magarena/release/Magarena/scripts/Serum_Tank.groovy

[
    new MagicWhenOtherComesIntoPlayTrigger() {
        @Override
        public MagicEvent executeTrigger(
                final MagicGame game,
                final MagicPermanent permanent,
                final MagicPermanent otherPermanent) {
            return (otherPermanent == permanent || otherPermanent.isArtifact()) ?
                new MagicEvent(
                    permanent,
                    this,
                    "PN puts a charge counter on SN."
                ):
                MagicEvent.NONE;
        }

        @Override
        public void executeEvent(final MagicGame game, final MagicEvent event) {
            game.doAction(new MagicChangeCountersAction(event.getPermanent(),MagicCounterType.Charge,1,true));
        }
    }
]