Umori is perhaps at its most impactful and dynamic in the all-artifacts build
For example, I didnt even mention the puzzle piece cards that could be assembled to build a super-oversized Chaos Orb (the majority of value to these lies in the one ultrarare piece, see image below)
Among the different decks, each one also comes with a unique playstyle and approach to winning the game, so no two are going to be the same
Doing this later on in your Lorcana game, when you have plenty of cheap cards in your discard, is critical to getting this card to really work for you
As Yugi defeats more opponents in the tournament, their millennium items go into the card
This blue enchantment lets you cast spells from your hand for free, completely ignoring their mana costs