When creating a thread in the Deck Garage, make sure that you post one deck per thread, you use the correct prefix, you have the set name/card number next to each card, you give a strategy for non-metagame decks, and give translations for all cards not available in English.
When posting in a thread, be sure to explain all your suggestions thoroughly. Additionally, do not ask for advice in another member's thread.
As you view some of the better decks in this Garage or on other websites, you'll find that most of those decks have a "focus" or a strategy that tends to limit the Pokémon used. For example, when starting to build a deck based upon some idea/concept, you first select the core Pokémon and Trainers you'll need to execute the deck strategy. These particular Trainers provide the needed "consistency" (a term used quite often) for the deck to run smoothly while you excute the deck's strategy. In your son's deck, I assume that the Lycanroc GX and Charizard GX are the main attackers. Supporting these main attackers are some other Pokémon you listed and most of these are strong Basics which will come in handy from time to time.
Note about 1-1 Poké lines: should either of the Pokémon be prized, you've potentially lost a resource for the game since you need both Pokémon. This risk of unavailability increases more so for Stage 2 Pokémon when just using a 1-1-1 line. Further, having multiple different lines (i.e., Charizard GX, Lycanroc GX, Rhyperior and Salazzle) will inherently impede "fast" setup.
So, I'd first suggest streamlining your deck to the main Pokémon lines of Lycanroc GX and Charizard GX. Secondly, few of the listed supporting Pokémon can be used as preferred starters while setting up the 'Rocs and 'Zards. So, consider the following:
2 Lycanroc GX (GRI)
1 Lycanroc GX (Promo)
3 Rockruff
2 Charizard GX - bumped up by 1 to increase consistency
2 Charmeleon
3 Charmander - bumped up by 1 to increase consistency
1 Zygarde EX - can also counter Alolan Ninetales
2 Ho-Oh GX - bumped up by 1 as a counter to Alolan Ninetales
1 Tauros GX - can also counter Alolan Ninetales
IMO, no Salazzle nor Rhyperior which are just "clutter" and more liability than assets.
Going from the original 19 Pokémon to 17 also freed-up some deck space for more "consistency" cards, like card-draw Supporters.
-1 Bursting Balloon - not critical
-1 Professor's Letter - 1 should be sufficient with improved card-draw support
-2 Wally - not critical
+1 Brigette - help to get your bench setup
+1 Energy Retrieval - recovers discarded asic energy
+1 N - more card-draw support
+1 Professor Sycamore
+1 Skyla - facilitates accessing Rare Candy or other needed Item
+1 Timer Ball - facilitates getting your Stage 1 Pokémon in play
+1 Ultra Ball
21 energy is way too much. I'd suggest:
-4 Burning
-1 Fighting
-1 Strong
Consider adding 2 Turtonator GX to replace the Tauros GX and Ho-Oh GX since Turtonator GX can retrieve and attach discarded R energy. Just a thought.
Any remaining open slots, consider testing cards that would be the deck more consistent or just needed cards like Guzma.
I hope you find these comments helpful.
That deck simply won't work Lycanroc GX and Charizard GX just don't go together at all.
But if that's what you're going with you need to get rid of non essential Pokémon (the 1-1-1 line of rhyperior will almost never come together) streamline Lycanroc and Charizard and add in more solid draw support (+1-2 sycamore/N no Wallys) Lycanroc GX is actually pretty good with circle circuit raichu so I would see if he wants to try that because I'll be %100 honest a Lycanroc/Charizard decks is just going to get mauled by most things.....but if that's what he wants than try to make it work who knows it could be amazing I know I've made my fair share of absurd decks haha
Well, this deck won't work. Tell him he has to choose between Lycanroc and Charizard, not both. If you decide to use it, please add Tapu Lele GX and Brigette. But he would lose propably and then he is unhappy.
And if he wants to be competitive and win, he should take a good card, not a good lookin. Like Metagross or Ninetales or Garbodor. Please try to tell him.
Oh yeah I didn't mean to come across disrespectful or anything either, you just gotta play and see what works and what other people do that's why the game is great, it took me awhile to see really what works and how to build/pilot meta type decks.I agree this deck will get destroyed 9-10 times. I tried explaining it to him but I think he is just gonna have to see to believe.
3 special energy on a stage 2? That's a bold strategy CottonHo-oh gx won't help against the ninetails that blocks gx attacks. I get the rest of the changes a lot of what I had was due to not having stuff like Bridgette and more N or Sycamore. Also I had the 4 burning energy for charizard when he discards them the will be reattached so he could keep doing the 300 damage.
Oh yeah I didn't mean to come across disrespectful or anything either, you just gotta play and see what works and what other people do that's why the game is great, it took me awhile to see really what works and how to build/pilot meta type decks.
I agree it's gonna be hard to make this work. I would have put a lele in there but the only ones I have are in my deck and my brothers deck. And I only have one Bridgette which is in my deck l. I think he is just gonna have to see that this deck doesn't work and go from there.