Unown A, Unown X, and Unown P make a very deadly combo when combined with 
an Alakazam.  When a Base Set Alakazam is already out with its three 
different Unowns.  All one needs is 3 damage counters on Unown A to trigger a 
40 base damage through Hidden Power.  Unown X with its flipping ability 
allows a for a few more points of damage to be dealt.  But Unown P which has 
Perform (Mirror Attack) can add more damage on top of it all.  An Unown P 
could do a lot of damage for only one energy.

Houndoomer