LET'S DO THE TIME WARP AGAIN!
-Signal Beam/Shadow Ball
Item: Choice Specs
Ability: Natural Cure
EV's and Nature: 4 HP/252 Special Attack/252 Speed
Modest (+ Special Attack, - Attack)/Timid (+ Speed, - Attack)
Not much to explain about how this set ought to be used. Leaf Storm for a powerful STAB move. 5 PP, less than perfect Accuracy, and lowers your own Special Attack with each hit; not the most ideal of moves, but since you will be switching around a lot, the Special Attack drop can be overlooked (not much to redeem the other problems though). Psychic is another STAB, one that's powerful and can lower the foe's Special Defense sometimes. Psyshock would've been good, however, to deal with Chansey and Blissy. Too bad Celebi can't learn it. Earth Power; last time Celebi was POTW the little fairy had nothing outside of Hidden Power to cover Steel types which tend to walk all over it, but now... Good power, occasionally lowers the foe's Special Defense like Psychic, it's a good attack. Specially Defensive Heatran sets will have to worry about running into a X4 Super Effective move that can, given enough hits, kill that good Special Defensive wall role, and Tyranitar also suffers a similar problem. Assuming, of course, that Celebi isn't destroyed by them but hey, at least now it has something that'll pose (something of) a threat to them! Signal Beam is for other Celebi, Hydreigon, and Latias/Latios, as well as other Psychic types in general. Shadow Ball basically does the same thing, just with slightly more power and also lowers the foe's Special Defense on occasion in exchange for a hit on Hydreigon. I thought about putting it as an option over Psychic due to the number of Dark types it'd give a free switch-in to, but like Venusaur's entry said, there's no such thing as too many Terrakion counters.
† I am a Christian and proud of it! Copy and paste this if you are too.†
-Take up thy cross and follow Christ Jesus.
~Don't underestimate my God~
♥I believe in Jesus Christ as my Savior. If you do too and aren't scared to admit it, then copy and paste this in your signature.♥
I don't calculate stat values, I don't use cheating devices, I don't breed my way to perfection, and I don't care about natures. I catch my Pokemon the way they are, and treat them like individuals instead of brainless drones. If you use this philosophy, copy & paste this into your signature. (Started by Tyranitar, "I don't use "uber" Pokemon," edited out by me because I do use "uber" Pokemon on occasion.)