Constellar, Knights of the Stars!

You may have seen these monsters prior to reading this article; you may like or hate them, but come April Hidden Arsenal 7 will be released. That makes now a good time to learn exactly what this deck does, and what you should expect when you're up against them.

Don't be afraid to normal summon him.
If your opponent uses Veiler, that's one they
can't drop on Kaus.

Constellar are a Light attribute archetype of monsters named after Stars and Constellations with varying Types, that in itself causes trouble getting your combo pieces in hand. Luckily, almost all of their types have a specific search card. Pollux is a Warrior which corresponds with Reinforcements of the Army, Kaus is a Beast-Warrior who is grabbed by one of the best search cards in Fire Formation - Tenki, and finally Sheratan is the Constellar specific search card, who tutors any one Constellar monster from your deck.

Now, the entire deck focuses on summoning any one of the numerous Xyz monsters they have access to, then using that monster to work the situation into a beneficial one. They burn up hand advantage very quickly, often summoning 2 monsters from the hand for each Xyz. Now, onto the monsters in particular.

Veiler can't hurt me!
I'm a continuous effect, so only cards that
would negate my effect when I enter the
battlefield can stop me!

Pollux has the nifty effect of letting you Normal Summon a second time during the turn he was Normal Summoned. This effect is a continuous effect that is applied when he enters the field, which means Veiler can't stop him (Note that a previously activated Skill Drain can and will stop his effect from being applied). One of the most common plays is to summon Pollux, then Normal summon Kaus, use Kaus's effect to change both of their levels to 5, then overlay for Constellar Pleiades.

Though Algiedi is very similar in function and purpose to Pollux, she has one very big difference though. Her effect is NOT continuous, she triggers upon being Normal summoned to Special summon one level 4 Constellar monster from your hand. Veiler can and WILL stop Algiedi, so be wise with your plays.

Leonis is yet another monster who will allow you to Normal summon twice, coupling with Sheratan to search then Xyz so as not to leave that vulnerable 700 body out. It also works with Kaus, who can change himself to level 3 or Leonis to 4 to suit your situation. 

Uguu~

Constellar Sombres reads like this:
You can banish 1 ""Constellar" monster from your Graveyard to target 1 "Constellar" monster in your Graveyard; add that target to your hand. You can only use this effect of "Constellar Sombres" once per turn. During your Main Phase, if you used this effect this turn: You can Normal Summon 1 "Constellar" monster from your hand as an additional Normal Summon. During the turn this card was sent to the Graveyard, you can Tribute Summon 1 "Constellar" monster with 1 less Tribute than required. (You can only gain this effect once per turn.)

Ignore that last part, it's near useless. This card, with the help of any two Constellars in your grave (Which is VERY easy to fulfill due to using 2 Constellars for each Xyz), allows you to still have plays mid to late game. Recovering a card is extremely valuable when all your plays are based on the hand. Please note that her second effect to Normal summon again is an IGNITION effect that starts a chain, and can be hurt by Veiler. The only card that can search her in a Constellar deck is Sheratan, which is a shame. Drawing her in an opening hand or before the grave is set up sucks too.

Watch out for Veiler.
Kaus must modulate levels one by one,
and if they use Veiler after he's changed one level,
you could be stuck with a level 4 and a useless level 5.

Now, the monster you will summon the most often by the others' effects is this handsome devil. Constellar Kaus in essence is the only way to make your rank 5 monsters, and forms the backbone of the deck. His level modulation gives the deck access to an Extra deck toolbox of sorts. The level change is PERMANENT, and only leaves when that monster leaves the field. He has been blessed with the type of Beast-Warrior, which recently got a huge boost in Fire Formation - Tenki. Tenki also allows you to run Brotherhood of the Fire Fist - Bear for spot removal. Kaus also has a beefy 1800 body (and goes to 1900 with Tenki), the biggest in the deck outside of Photon Thrasher should you choose to run him.

The Constellar Xyz are all very powerful; Pleiades, Omega, Ptolemy, Praesepe, and Hyades are all useful. This allows the Extra to act as a toolbox and work any situation into your favor. Be it by Pleiades' bounce effect, Omega's immunity to S/T, Hyades changing a problem monster into defense, Ptolemy's ability to return a monster to the hand, or Praesepe's attack boost, all help to give you the edge to win.

Remember that I can't use my effect
the turn you Chaos Xyz me.

I can bounce Monsters, Spells, AND Traps
on either player's field during
EITHER player's turn.

Dark Hole? What's that?

Now, this deck has a few weaknesses. It needs to summon both of the materials for an Xyz, making Effect Veiler a very good card to bring in. Veiler disrupts Sheratan, Kaus, Algiedi, and Sombres. The Xyz are hard to play around, often forcing you to go neg to get rid of them. Pleiades bounces and monsters that could be a threat, Omega makes all Constellars immune to S/T, Ptolemy and Praesepe are large bodies. Anything that stops them from getting into the awesome monsters is an effective method. Summon Limit, Bottomless, Torrential Tribute, Compulsory, all of these work. All of the maindeck monsters are not very strong, so big monsters can run them over.

I've learned that Safe Zone is a great tech card, it allows Omega to become immune to Monster effects in a sense. If they use Heavy or MST or any of the numerous S/T removal in the game, chain Omega to it to stop Safe Zone from affecting the Constellar in question. Some people run Photon Thrasher as a partner to the level 4 Constellar, either to Xyz summon, force a Rai-oh, or bait out S/T.

In essence, Constellar focus on getting the Field Advantage and holding it. They are very good at doing this quickly. The Xyz monsters are difficult to get around, and will require the opponent to waste valuable resources to get rid of them, only for you to make another the next turn. The deck needs to use Xyz or else it's entirely outmatched, so any tactics to prevent the Xyz work. It's a terribly fun deck to play, and is interesting to play against.