Dimension Xyz: for some reason I don't know, I just can't do an Xyz summon after resolving the effects of the card, even though all the conditions are respected.

Armatos Legio Pilus Prior/Armatos Legio Primi Ordiness : their effects do not match with the effects listed on the Yu-Gi-Oh! Wikia website:
- for Armatos Legio Pilus Prior:
https://yugioh.fandom.co...rmatos_Legio_Pilus_Prior : If this card is Link Summoned: You can banish cards from the top of your Deck equal to the number of co-linked monsters you control, and if you do, add those cards to your hand during your next Standby Phase. During your Main Phase: You can target 1 Level 4 or lower "Armatos Legio" monster in your GY; Special Summon it. You can only use each effect of "Armatos Legio Pilus Prior" once per turn.[/indent]

- for Armatos Legio Primi Ordiness :
https://yugioh.fandom.co...atos_Legio_Primi_Ordines : During your Main Phase: You can target 1 Level 4 or lower "Armatos Legio" monster in your GY; Special Summon it. You can only use this effect of "Armatos Legio Primi Ordines" once per turn. Any battle damage you would take is reduced by 1000 for each co-linked monsters you control.[/indent]

for Dimension Xyz, without a replay or at least a complete description of the situation, hard to says where the problem is

for the Armatos Legio, it was already explained in the following topic:
https://www.ygopro.co/Fo...ters?m=205236#post205236 

If you'll excuse me, here's what should help you (.yrp is enough?). Here is the configuration of the duel:
- Forbidden list: N/A.
- Allowed Cards: Anime.
- Duel Mode: Single Duel.
- Time limit: 180.
Additional Options
Rule: Master 3.
Don't check deck - Do not shuffle deck
Starting LP: 4000.
Starting Hand: 5.
Cards per Draw: 1.

A script error appears when the card is activated: [string "./script/c511000698.lua"] :50: attempt to index a nil value (local 'tc').

Regarding the two Armatos Legio, please excuse me also, I had not found the post in question during my research. I would have a question though: what does note 1 mean?

Regards.

For Dimension Xyz, thank for the replay, i'll check that when i can reach my pc

the note 1 refer to the note at the bottom of the page (sometime, a same card can have different notes)

Contrary to its written text, this card's effect could Special Summon the "Armatos Legio" monster from the Graveyard to any of its controller's zones, not just the ones it pointed to.

it mean that there is a difference between what is the written effect and how the card was used in the anime (it happen from time to time)

Thank you very much!

Regarding the Armatos Legio, that means we won't be able to do like in the anime? (It would have been cool to do Lightning's Extra Link in turn 1 when Judgment Arrows will be available for fun).

Animation errors happen regularly (for ex, summoning a Special summon monster that was not properly summoned from the GY), nothing can be done to fix that (sometime they fix when the error is obvious for the blue ray release like but it is quite rare)

We use the Text as reference because compared to dialogue/animation, there is less problem

Maybe the Play will still be doable (i don't have the exact sequence in mind), but there could be some change compared to the anime

I think I found another error, this time with the card Red Cocoon. I don't understand why its last effect doesn't activate in the End Phase of turn 5. I attach the replay!

I think I found another error, this time with the card Red Cocoon. I don't understand why its last effect doesn't activate in the End Phase of turn 5. I attach the replay!

Simple, Ultimate falcon effect prevent you from activating card or effect for the rest of the turn, so you cannot activate cocoon effect during that turn EP

I think I found another error, this time with the card Red Cocoon. I don't understand why its last effect doesn't activate in the End Phase of turn 5. I attach the replay!

Simple, Ultimate falcon effect prevent you from activating card or effect for the rest of the turn, so you cannot activate cocoon effect during that turn EP

Oh yes, simple indeed ^^'