magarena/release/Magarena/scripts/Sokenzan_Spellblade.groovy

[
    new MagicPermanentActivation(
        new MagicActivationHints(MagicTiming.Pump),
        "Pump"
    ) {
        @Override
        public Iterable<MagicEvent> getCostEvent(final MagicPermanent source) {
            return [new MagicPayManaCostEvent(source,"{1}{R}")];
        }
        @Override
        public MagicEvent getPermanentEvent(final MagicPermanent source,final MagicPayedCost payedCost) {
            return new MagicEvent(
                source,
                this,
                "SN gets +X/+0 until end of turn, " +
                "where X is the number of cards in your hand."
            );
        }
        @Override
        public void executeEvent(final MagicGame game, final MagicEvent event) {
            final MagicPlayer player = event.getPlayer();
            game.doAction(new MagicChangeTurnPTAction(
                event.getPermanent(),
                player.getHandSize(),
                0
            ));
        }
    }
]