The Transcendent Ctan is actually a collection of shards so it is not a full Ctan. Nevertheless this thing is one hell of a beast. Lets look at it in closer detail:
First off you will notice that this thing costs a little over 400 points standard and it is a GARGANTUAN CREATURE. So you get a slew of extra rules like Feel No Pain and more. Now lets look at this statline that made my jaw drop.
WS:6 BS:6 S:9 T:9 W:6 I:5 A:8 LD:10 Sv 3+/4++
That right there isincredible. This thing can easily slug it out with greater Daemons or Tyranid monsters. But thats not the best part.
The Cyan MUST choose 2 from the 6 powers you can get from the Tesseract Vault but the point costs are still the same. However the Ctan also MUST pick 1 of 3 unique powers. The one you SHOULD ALWAYS take is the one I'm only going to be saying now.
Basically in the movement phase, the Cyan can move 18 inches in a straight line. Anything that the Ctan moves over ( friend or foe)takes an immediate DESTROYER hit! But it cannot assault in the turn it does this sadly. Wow that is brutal. Imagine the potential of this unit!
Move 18 inches inflicting D hits than firing your2 other powers. So fly over and get those D hits, then fire a 6d6 Strength 8 ap 3 shots or cast down meteors or use the other Destroyer weapon...there is just so much devastation you can cause with this its ridiculous.
Now a word of caution!. When this thing finally dies everything within 4d6 is going to die most likely so keep ypur precious units away from this!
But the Transcendent Ctan is easily the best unit for the Necrons in this book. However it willcost you over 700 points to do the tactics i mentioned. For any Necron players tht have extra Ctan like the Nightbringer or Deceiver, I see no reason why you can use them as these beasts. Really go nuts. These things are awesome.