Discard payoffs like Bone Miser and Archfiend of Ifnir can give you other perks while your cards are on their way to exile
For years, MTGA ate up wild cards if you wanted a specific art for a card you already had four of with the default treatment, now you can collect any printing of a card and it counts for one copy of any style you have of that card
Nowadays, that legendary clause means less and less, as legendary creatures are everywhere
This means that Brightstone Ritual has no true upper limit, and it is likely to generate more mana than even Seething Song in a goblin-themed Commander deck
Any card that can consistently create Treasure, like Captain Lannery Storm and Pitiless Plunderer, are great ways to keep fueling Breya, Etherium Shapers abilities
If you're reading this, think of a directory map in a typical American mall, if you will