private static String addTurnStackDescription(AbilityFactory af, SpellAbility sa) {
        HashMap<String, String> params = af.getMapParams();
        StringBuilder sb = new StringBuilder();
        int numTurns = AbilityFactory.calculateAmount(af.getHostCard(), params.get("NumTurns"), sa);

        if (!(sa instanceof Ability_Sub))
            sb.append(sa.getSourceCard()).append(" - ");
        else
            sb.append(" ");

        ArrayList<Player> tgtPlayers;

        Target tgt = af.getAbTgt();
        if (tgt != null)
            tgtPlayers = tgt.getTargetPlayers();
        else
            tgtPlayers = AbilityFactory.getDefinedPlayers(sa.getSourceCard(), params.get("Defined"), sa);

        for (Player player : tgtPlayers)
            sb.append(player).append(" ");

        sb.append("takes ");
        if (numTurns > 1) {
            sb.append(numTurns);
        } else {
            sb.append("an");
        }
        sb.append(" extra turn");
        if (numTurns > 1) sb.append("s");
        sb.append(" after this one.");

        Ability_Sub abSub = sa.getSubAbility();
        if (abSub != null) {
            sb.append(abSub.getStackDescription());
        }

        return sb.toString();
    }