Synchro Fusion

Synchro Fusions. Why not?
We have fusions, we have synchros. I see no reason why a monster can't be both.
The format of a Fusion Synchro is very simple. They are all a "specific tuner + 1/2 (or more) generic monsters" or "specific non-tuner + 1 generic tuner". I suppose "generic tuner + 1/2 (or more) generic non-tuner" would also work.
The obvious question would be: why would anyone want to fusion summon a monster they can synchro summon?
That's the key point to these cards. You have to make a situation where one of the two is much harder than the other, but the effects you gain from using the harder is better.
Say, for example, one such monster with level of 6 has the materials:
"Emissary from Pandemonium" + 1 Fiend-Type monster.
It would be slightly harder to summon by Synchro Summon. Since Emissary is already at lv 5, you will need a lv 1 monster. And you will have had to Tribute a monster to summon Emissary. On the other hand, you don't need to summon anything to fuse it, and there are no level restrictions. So let's give it an effect that would favor a synchro summon.
Like so:

Lightning Lord Archfiend
******
DARK
Fiend/Effect
2500/1200

"Emissary from Pandemonium" + 1 Fiend-Type monster.
If this card was not Special Summoned by a card effect, Fiend-Type monsters you control cannot be destroyed by card effects while this card is face-up on the field. When this card is Synchro Summoned or Fusion Summoned: You can destroy all cards on the field.


An example of a monster that would favor Fusion Summoning would be as follows:

Vylon Beta
******
LIGHT
Thunder/Effect
2300/1100

"Vylon Prism" + 1 or more Machine-Type monsters.
When this card is Special Summoned: Target a number of cards on the field up to the number of non-Tuner monsters used to Summon this card; destroy them. Once per turn: you may send 1 card equipped to this card; destroy 1 card on the field.


This way, it's much easier to summon by Synchro, but by using a fusion summon, you can add any number of monsters (since there is no level limit to fusion summoning) and destroy more cards.
It's rather hard to balance, but otherwise, I think it would be interesting. Anyone want to have a try?

This is kind of interesting. Would be nice to see Fusions make a come back for something other than Gem Knights.

Although at first when I saw the thread title I thought it was Synchro monsters that use Fusion monsters as material. Like One Tuner (specific or not) + Some Fusion Monster lets say Dark Flare Knight because I like it.

These monsters serve as both Fusion Monsters and Synchro Monsters. So long as the materials are fulfilled, they can be summoned by either fusion or synchro summon. While on the field, they will be treated as both a fusion monster and a synchro monster, much like how Trap-Monsters are both trap and monster.

One way to make them work would be, as you have said, to give it a different effect depending on how it was formed.

The other way is to make sure that the effect favors one of the two forms. If you have, for example, a "+ 1 or more monsters" for material, synchro summon will only allow you to use a few monsters (level limit), while fusion will be limitless. Then, you can add an effect that depends on the number of monsters you used for the summon, thus favoring fusion summon.