public static MaplePacket skillEffect(MapleCharacter from, int skillId, int level, byte flags, int speed) {
        MaplePacketLittleEndianWriter mplew = new MaplePacketLittleEndianWriter();
        mplew.writeShort(SendPacketOpcode.SKILL_EFFECT);
        mplew.writeInt(from.getId());
        mplew.writeInt(skillId);
        mplew.write(level);
        mplew.write(flags);
        mplew.write(speed);
        return mplew.getPacket();
    }