Let me tell you a story about a game that my roommates and I have come up with. It all started at the Breakers of Shadow Sneak Preview, where the store owner tried to slip a Steel Cavalry of Dinon into one of my roommate’s binders. After that, my first roommate snuck a Steel Cavalry of Dinon into my second roommate’s binder, behind a Qliphort Scout.

This then turned into a game where the three of us tried to stealthily hide Steel Cavalry of Dinons in places where they would eventually be found; if you find one, you’ve been “bamboozled”, and whoever hid the Dinon gets a point. We even doodled on our Dinons in order to tell whose they were.

So, why did we create such a silly game with this card?

Because Steel Cavalry of Dinon is trash. It’s terrible. Its one effect is a negative effect, and it has virtually no redeeming qualities besides being a Pendulum Monster and having 2600 DEF (the latter of which is mitigated by the negative effect). Sure, it’s Level 4 and Scale 5, but there are much better monsters with both of those stats. This is actually one of the worst cards I’ve seen in recent times, and quite possibly the worst Sneak Preview promo ever. I’m not even exaggerating.

This card is bad. It’s absolutely bad. Do not under any circumstances play it; you’re better off using it to “bamboozle” your friends.

Rating: 1/5

At best it's a 2600 vanilla defender, which is nice but not enough for an effect monster these days.  At worst, it gets crushed in battle against commonly used Pendulum monsters.  There are better Pendulum monsters to use all around.  Being a LV4 Dinosaur Pendulum can make it work for some decks I guess.
 
2/5

Dinosaurs, that was a great TV show. Anyway, Steel Cavalry of Dinon is a Level 4 Earth Dinosaur-type Pendulum Monster with 1600 Atk and 2600 Def and Scales of 5. So this is the high Scale counterpart of Samurai Cavalry of Reptier. The stats are mostly the same as that monster except for the Atk and Def. That Def is huge and has almost no drawbacks. At least the Scales allow for Level 4 Pendulum Summons with no restriction. Honestly, this card would have been better as a Normal Monster with no effect.
 
Negative effects for an underdeveloped type hurt my state of mind. You can enjoy those stats for everything except against Pendulum Monsters. If Steel Cavalry of Dinon battles any Pendulum Monster in any position, you have to cut its current Atk and Def in half. 800 Atk and 1300 Def won't do much, and there isn't much point in investing in a defender to keep it on the field. If Pendulum Monsters ever go out of style, this dinosaur can see new life. Until then, it's just a Level 4 good Scales monster. 
 
Score: 3/5 For being some of the only Dinosaur support out there. 
Art: 4.5/5 For looking awesome.
 
-WarlockBlitz

Soooooooo, let me get this straight. On one hand, you have a vanilla Pendulum card that helps bring out Level 5 Monsters. Okay, no big deal there. On the other hand, you have a Monster with low ATK points but high DEF points, but gets weaker when going up against other Pendulum Monsters in battle.
 
I'm sorry, but when is asking your opponent to bulldoze your monster ever a GOOD thing? 
 
Sure, even with its DEF halved, that's only 1300 DEF. Still nowhere good enough to save itself. Perhaps I'm missing something here, perhaps there's more use to this card than I realize. Excuse me for a moment, while I do some research. 
 
*leaves, comes back in a minute* 
 
...Okay, so apparently the translators goofed. This card is supposed to mirror the ATK and DEF of the Pendulum Monster it's battling against, henceforth it could suicide with virtually any powerhouse, so long as it's a Pendulum.... THAT'S TEN TIMES BETTER THAN THE EFFECT WE'VE GOT! Geeze-chrimeny-Christmas, they'd better fix this! And soon, because for now this card is utter garbage.

 Score: 1/5 .....for now.....