The regular Kingdra is far too underpowered to be usefulw ith Luxray X around.
Kingdra Prime is amazing, doing 20 less to the bench in order to be able to put a damage counter everywhere and not need a discard.
Lanturn should be an amazningly balanced card, but with all the unbalancedness of the soon to be format, it isn't.
T-Tar, Hitmonlee, Steelix and Pinsir are all meh
Houndoom doesn't really seem like much, with burn so unreliable and being unable to really do anything with the burn. It does too much to be a good lock pokemon, and is just open to 2HKOs for less energy than it needs to do so.
Scizor is good, and will be a good balance to the DCE'd format, espically with Call and such around.
Entekou is alrighty, in my opinon the hardest and oddest to play. 2 for 90 with a discard means that it can easily 2HKO anything the format has to throw at it, while hitting some amazing type coverage (Dialga, Kingdra, Blastoise, Jumpluff). His second attack is AMAZING. Given its (L) cost, manetric PL can be played to negate the backlash, and allow you to blast Uxies, Azelfs, Ninetails', Garchomp C's, Luxray Xs, Gatrs, Typhlosions etc for a ton of damage everyother turn. With its ability to deal great straight damage, this card is the Rayquaza* of the new format. it's typing also means Raywaquaza LA works perfectly with it in combination of energy movement.
Suitei is pretty easy to play, but insaely effective at what it does. You have an improved Steelix Ex who can still get the effect of Rain Dance from Gatr, and won't be losing the energy Steelix did. It also has the sure to be underused Bursting Inferno, which provides it a great outlet to do some serious 2HKOing under Power Lock. Its typing gives it the edge on Donphan, Jumpluff and Dialga G, but comes at the price of (L) and (W) weakness, which is terrible enough with just Luxray GL X, but imagine playing against an opponent who has Suikou and does x4 to it (600 damage with the first attack, 200 with its second + healing) which is a dozy.
And my personal favorite Suikou! The first attack is IMo to big a liability. The second attack however, prodies it with a very conservative style of play. With Sunnyshore/Snowpoint at its disposle,a nd Expert Belt attached, it can do 70 damage, with 2 chances to hit for weakness, healing 50, with 180-200HP. This makes it a very aggressive and risky style of what garchomp SV tried to be. it also has ability to get the plus from Floatzel GL Lv.X, Gatr and other water support cards. However, if your opponent counters your stadium and is playing somethign with Donphan/Machamp/Luxray, you are in for quite a hard game.
I'mma love these new legend cards.