Do I have to meet the energy requirements for the attack I choose with Zoroark's "Foul Play"?
No, you do not have to meet the energy requirements for the attack. However, if the attack says you must do something or the attack does nothing, that part still has to be done.
Source: Black & White FAQ (2011-04-28), PUI Rules Team (2011-04-28)

Relevant cards

Note: All applicable cards may not be listed below.
BW1_71