Exhibit 14

  Consent of Ernst & Young LLP, Independent Registered Public Accounting Firm


We  consent  to  the reference to our firm under the caption "MDT Fund Financial
Highlights" in the  Prospectus/Proxy Statement of Federated MDT Small Cap Growth
Fund, a portfolio of Federated MDT Series, and to the incorporation by reference
of our report, dated  September  19,  2007,  on  the  financial  statements  and
financial  highlights of Federated MDT Small Cap Growth Fund as of July 31, 2007
included in this Registration Statement on Form N-14 for Federated MDT Small Cap
Growth Fund.  We  further consent to the reference to our firm under the caption
"Financial Highlights"  in  the  Prospectuses  of Class A and Class C shares and
Class B shares dated September 30, 2007 and December 17, 2007, respectively, and
to the incorporation by reference of our report  in the Statements of Additional
Information dated September 30, 2007 and December  17, 2007, respectively, which
are incorporated by reference into the Prospectus/Proxy  Statement  included  in
this  Registration  Statement  on  Form  N-14 for Federated MDT Small Cap Growth
Fund.

We also consent to the incorporation by reference of our report, dated September
19, 2007, on the financial statements and  financial highlights of Federated MDT
Small Cap Growth Fund, in the Federated MDT  Small  Cap Growth Fund Statement of
Additional Information, dated September 30, 2007, on  Form N-1A, which was filed
with  the  Securities and Exchange Commission on September  28,  2007  in  Post-
Effective Amendment  No.  4  (File  No.  811-21904)  which  is  incorporated  by
reference  into  the  Statement  of  Additional  Information  included  in  this
Registration Statement on Form N-14.  We further consent to the incorporation by
reference  of  our report, dated September 19, 2007, on the financial statements
and financial highlights of Federated MDT Small Cap Growth Fund, included in the
Annual Report to  Shareholders  for  the  year  ended  July  31,  2007, into the
Statement  of Additional Information included in this Registration Statement  on
Form N-14 for Federated MDT Small Cap Growth Fund.


                                                           /s/ ERNST & YOUNG LLP

Boston, Massachusetts
November 28, 2007