My 2nd review of the day. Since I'm tired after writing the first and longer one, I will try to make this one shorter.

As for this review, I would look at another Dragon with more than a head. Of course, if you know what "tri" means...this card has 3 heads.
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RGBT-JP043
Trident Dragion
Fire/Dragon - Synchro/10/3000/2800
Dragon type Tuner + 1 or more non-Tuner Dragon type monster(s)
This card cannot be special summon outside of by Synchro Summon. When this card is successfully Synchro summoned, you can destroy up to 2 cards on your field. During the battle phase this turn this card can attack one more time for each card destroyed.
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Art:
Well, as this card is call "Trident Dragion" after all...it does have 3 heads, all breathing flames to the ground.

Unlike F.G.D., however, all 3 heads of this Dragon is actually one and the same, so there is nothing special about the illustration of this card in relation to other Dragons. Of course...it does not mean that this card art does not look cool....
RATING: 8.7/10

Stats/Requirement:
This card is a level 10 Synchro (highest level for now) with stats of 3000/2800. This card also requires you to use only Dragon type monsters as both the Tuner and the non-Tuners.

Well, in first look, level 10 may sounds crazy. It is...even with the Dragon Level 4 Tuner in [Debris Dragon]. Even so, the fastest way this card can be Synchro Summon is [Debris Dragon] + a level 6 Dragon monster (there are plenty of them...). Other options include using [Vice Dragon] + level 3 monster + [Magna Drago], 4+4+2 using [Manga Drago], etc.

Combo? Well, [Instant Fusion] out a level 5 Dragon is one (i.e. [Dragon Riding Wyvern]), using it with [Red Eyes Darkness Metal Dragon] is another (but that applies to all Dragon deck). It's not easy, this card is not [Goyou Guardian] (where 1 Rescue Cat can bring it out), but it's not as bad as one thought.

RATING: 7.0/10

Effect:
This card only have 1 effect: when this card is Synchro Summon, you can destroy even MORE cards on your field to feed this Dragon. Well, you may ask the big question: where in the world I can still have more cards on the field after the Synchro Summon which potentially can take up 3 of your monsters? Well, the good news is that this card can destroy M/T as food, so comboing with cards like [Cursed Coffin] or [Golden Statue of Wicked God] is always great. Otherwise, there are always Tokens...

Anyway, with the effect, this card can be potential game ending by just battle damages. This card can attack up to 3 times the turn it was Synchro Summon, so 9000 potential damages is just not a joke.

RATING: 6.5/10

OVERALL - 7.5/10 - In terms of how fun this card can be, this card is just fun to play with and humiliate opponent. Of course, one thing is that this card is seriously limited to Dragon type deck due to its Synchro requirement, so other deck cannot use this as their finish condition (unless they somehow have all the required Synchro materials on their field). But let's be honest myself, even in Dragon deck, I would see this card as "overkill". There are other options with high attack strength in a Dragon deck that is easier to be brought out than this card (i.e. Red Demons). Also, this card's lack of self-protection can be killing...opponent only need a single [Bottomless Pit Trap] to ruin your fun. If you can somehow have so much Dragons on your field, unless opponent have a large monster, or a player just want fun, I don't see why this card should be use at all in most situations.