Xatu SW is a fairly decent card. 80 HP is average for a Stage 1, +10 Weakness to Psychic isn't good but it could be worse, -20 Resistance to Fighting is good, and a Retreat Cost of 1. Its Poke-Power, Psychic Shift, allows you to shift 1 Special Condition from your active to the opponent's active. This is quite beneficial, though status conditions aren't that widely played. Energy Singe is a decent sniping attack, particularly if your opponent likes to build up his/her Pokemon on the bench.
Modified - 7/10 (Could be beneficial as a tech)
Limited - 9/10 (Status Conditions are used more here, making him even more useful)
Unlimited - 1/10 (Maybe combine with Drowzee from the Rocket set? I dunno)