Most Players Make This Deck-building MISTAKE | Union Arena Deckbuilding Guide | Union Arena TCG

❌ Most players lose games before the match even starts — in deckbuilding.

In this Union Arena Deckbuilding Guide, we break down the #1 mistake most players make when building their decks and how it silently kills consistency, tempo, and win rate.

Whether you’re prepping for locals, regionals, or just trying to level up your gameplay, this video will help you:

Identify common deckbuilding traps
Understand why certain card ratios fail
Build more consistent, competitive decks
Stop copying lists blindly and start adapting them properly

This guide is perfect for new players, competitive grinders, and anyone who wants to stop bricking and start winning more games.

🔥 If you’ve ever asked:

“Why does my deck feel inconsistent?”

“Why do top lists work but mine doesn’t?”

“What should I actually cut or add?”

…this video is for you.


If you enjoy this kind of detailed guide, let us know in the comments what deck or archetype or other topics you’d like to see next — and don’t forget to like, subscribe, and share to support more content like this!

Follow Carryion on X:https://x.com/carryiontcg?s=21

#unionarena #deckbuilding #guide #tcg #gghaven #gencon #cardgames #unionarenatcg #metaanalysis #bandai

🔥 Don’t forget to like, comment, and subscribe for more GG Haven content — including tournament coverage, deck techs, and community discussions!
------------------------------------------------------------------------------------------------------------
Discord Links:

GG Haven Discord:   / discord  

------------------------------------------------------------------------------------------------------------
Other Union Arena Videos:

I Took a Risk Going to Houston Regionals… Was It Worth It? | Road to Regionals | Riftbound TCG
   • I Took a Risk Going to Houston Regionals… ...  

Switched Out 2 Cards and the Decks Play SO MUCH BETTER | Ichigo vs Byakuya | Union Arena TCG
   • Switched Out 2 Cards and the Decks Play SO...  

Setting the Stage for NATIONALS! | Versus Games Orlando Regional Top 16 Breakdown | Union Arena TCG
   • Setting the Stage for NATIONALS! | Versus ...  

------------------------------------------------------------------------------------------------------------
Follow our Instagram :   / gg.haven  
Follow our Tik Tok:   / gg_haven  
Website: https://www.gghaven.ca
------------------------------------------------------------------------------------------------------------

Timestamps:
00:00 - Intro
02:41 - Precursor
05:15 - First Steps
08:02 - Rules of Thumb
29:52 - Playstyle vs Preference
37:47 - Consistency vs Highroll
50:08 - Final Touches