Ninetales from SW gives us a nice tech card. Stats-wise, Ninetales is average: 80 HP is solid for a Stage 1, +20 Weakness to Water is average (though being weak to a popularish type isn't good as always), no Resistance, and 1 Retreat Cost. Its Poke-Power, Color Shift, is pretty nifty, allowing Ninetales to become the same type as a type of Pokemon your opponent has out until the end of the turn. This is especially great for Pokemon types/decks that have a Weakness to their own type (Psychic Pokemon in general and Gardevoir/Gallade decks being a good example). Combined with a Lake Boundary Stadium, this gives Ninetales some real potential. Its sole attack, Fire Blast, does a solid 60 damage for 2 Fire Energy, and requires you to discard one of those Fire Energies.
Modified - 8/10 (Solid tech card given the popular decks out there)
Limited - 9/10 (Solid, cheap Stage 1 line with a great attack)
Unlimited - 1/10 (No use here really)