So to end our restricted list update week, we are looking at Formula Synchron which has recently moved up from limited to semi-limited. Honestly, as much as I like this change, I just don’t see it changing many Extra decks. Synchro Quasar decks will typically be the main deck using Formula Synchron and sadly they just aren’t that good at the moment. Popular cards like Black Horn of Heaven and Maxx “C” can really put an end to their fun. With Soul Charge around there are even fewer reasons to run a second Formula Synchron in your Extra deck. So, likely the only decks that will use more than one, will be decks built to take advantage of the interaction with T.G. Hyper Librarian.The deck that received the biggest boost from this card going to two was Fabled Quasar which is built to generate resources from Synchro monsters like Formula Synchron, T.G. Hyper Librarian, and Fabled Ragin. I could easily see Fabled dropping two Formula Synchrons next to a T.G. Hyper Librarian in an average game.
 
However, Librarian abuse is not the only thing this card can do. Do not forget that Formula Synchron has another very useful effect (which was likely the inspiration for the Yang Zing archetype). Formula Synchron will allow you to perform a Synchro Summon on your opponent’s turn in their main phase. Considering most decks that use Formula Synchron will be concentrating on using it with level 5 Synchro monsters, it is very likely that you will be able to make a Black Rose Dragon on your opponent’s turn at a time when they are most vulnerable. In the past, whenever a player would resort to this play it typically meant giving up on making a Shooting Quasar Dragon. However, with two in the Extra deck, along with Soul Charge, it’s quite possible to make this play and still make a Shooting Quasar Dragon later in the duel. Soul Charge also enables you to combo with T.G. Hyper Librarian even more often.
 
Sadly, it is unlikely that we will see anyone take advantage of the second copy of Formula Synchron that they are now allowed, but for people running decks like the ones I described, this change has probably been long awaited.
 
Traditional: 2/5 (it can generate advantage and potentially create combos, but it is unlikely a deck would be built to use it)
Advanced: 3.25/5 (it is a key card in most Quasar strategies)

Formula Synchron

Went from 1 to 2.  It was limited because it was abused in the synchro era via tg hyper librarian.  FS was easy to summon with tokens and predominant tuner support.  Since FS is also a tuner you can do an additional synchro summon with tokens and floaters you control to synchro something more powerful and draw again off librarian.  So Konami put it at a probationary 2 so it wouldnt be abused this format.   But if it were at three, it might have even inspired more people to revisit the librarian route

Most interesting is the effect to synchro during your opponent's turn.  The opposite of Defusion but similar concept when you chain it to waste your opponents removal or disrupt their combos.  As for summoning FS,  it shouldn't be hard to summon it but you can also use two floaters to bring out an even better rank four.  Librarian is available at one, Goyo is emancipated and the old synchro support is still there.  With rising competition from other archetypes and less room to abuse synchros, FS is not the gem it once was.

It still could have some potential.  I can't give it a high score because it needs to prove its value in tournament play but right now.  I guess we will have to wait for someone to assemble the old synchro gang together again.

Traditional - 4 (due to the graveyard abuse and draw power, this card is even better here)

Advanced - 3 (We'll see what happens)

Formula Synchron
This is a card that has now become Semi-Limited from being Limited.
Firstly, it’s effect:
“When this card is Synchro Summoned: You can draw 1 card. During your opponent's Main Phase: You can Synchro Summon using this face-up card you control as a Synchro Material Monster.”
Additionally, to it being a Synchro monster it’s also a Level 2 Tuner, Light Machine type with 200 ATK and 1500 DEF.

Being able to Draw a card upon successful Summon of this card is certainly a great effect as this helps to reduce or remove any costs involved for the Summon of this card, this effect alone combined with the fact that it’s a Tuner would be more than enough to make this card playable. And this fact is what makes it such a valuable asset in Synchrocentric Decks, and is an extremely important card for Decks who’s aim is to Summon Shooting Quasar Dragon.

However, Formula Synchron’s second effect is what I find to be an extremely valuable effect as being able to Synchro Summon during your opponents Main Phase can open up such plays as Synchro Summoning into Black Rose Dragon, or Synchro Summoning during your opponents turn simply to fulfil the activation requirement for Torrential Tribute, or Chaining to an effect that Targets one of your monsters simply so that you can avoid that card, even Summoning into what could be essentially considered a “Beater” can be more than enough to disrupt your opponents plays.
Creative use of this effect opens up huge potential for you to disrupt your opponent and this is truly an effect that I feel is under used, but then it is also underused due to the fact that because of it’s first effect, and because it’s a Tuner, Formula Synchron generally is a stepping stone to further plays and Summons during the turn that it is Summoned.

Some monsters are also dependant on having a Synchro Tuner in order to be able to Summon them, namely Shooting Quasar Dragon and Shooting Star Dragon so Formula Synchron becomes a highly important card for these Decks, also Formula Synchron may well see play in any Deck that cares to run Synchro’s, and while this may not be that great a number of Decks, undoubtedly it will be a great boost.
Expect to see this card in anything from Synchrocentric, Frog Monarchs/ Lancer to Chaos type Decks, all which can benefit from this cards increase in number.

Traditional: 3.5. The fact that this card becomes relevant when Summoning a Shooting Quasar Dragon… Or two, makes this card still very valuable even in this format.

Advanced: 3.5. Although it does provide a boost to a great many Decks, the reality is that the Decks that this card will mostly see play in simply aren’t going to make enough of an impact for this card to truly shine. Plus, as most Decks don’t even play 1 Formula Synchron, this card being at 2 is not going to change how much play it sees in general.