I wasn't aware that there was another lightning type pokemon who had the ability to two turn KO a Blissey, even if something forces you to lose the active Tyranitar EX d (IE: Knock out or Warp Point forces something different to come up. In those cases, you'd send up a second Tyranitar EX d with three energy on it.)
I wasn't aware that there was another pokemon line so easy to power up due to Raichu MT, nor that there was an option for the whole line to be delta (Fearow still is one of the fastest pokemon searchers, due to only being a stage 1 and working on the bench), nor that the non-delta stage 1 can act as a free pluspower to the Tyranitar EX d once it comes out.
A Pupitar spreading damage then evolving into Tyranitar EX d will make Empoleon and Feraligatr sweat tears of blood. Tyranitar makes decks who only play one active at a time (solo blissey for example) very scared.
And did anyone forget that Tyranitar EX d has 150 HP, which is the second highest in the modified format (highest is a LV X, Torterra), with a rather uncommon weakness. Oh dear. Kricketune beats this with no problem. Does Mario? Do Empoleon varients? Does Electivire? Does Infernape? Does Blissey?
The only deck out of those four I just listed that would be rather scary would be Electivire, because they have a large enough bench to prevent Ele-mark donks, and Hyper Claws is only 70 damage to an Electivire, while they quite easilly outmuscle you. Even then, You can manage to Ele-mark their Electabuzz ds to prompt them to evolve quickly or lose their draw power. Additionally, Ele-marking Electivire SW would be rather scary for a future pure Electivire deck, as losing the ability to retrieve energies makes the deck flop.
[del]I feel like I'm randomly stating stuff now... Great, what have I said? Searchable by an easy pokemon line, Powerable by another easy pokemon line, only flaw is the fact that it's 2 prizes when most pokemon aren't 2 prizes anymore, and you can pick off EXs at will with this thing[/del]
It's not unplayable when built right. Certainly the deck isn't going to be perfect (It's a stage 2 EX. Dang. Even if that means Xatu finally has a use... :/) , but it's playable enough for some tournaments.
Just get away from the idea that Tyranitar must be using his first and third attacks, 'cause spamming the same tactic every turn is never a good idea.
EDIT: And Tyranitar should not be paired with cards like Flygon d or even Altaria EX d. You're playing a power reliant (and in the case of Flygon, Battle Frontier vulnerable and a Stage 2) pokemon to play extra energy from the hand, when you can do the same thing but from the deck and twice as fast with Raichu... Why?