The big problem is that All Will Be One is five mana and as an enchantment, must be played at sorcery speed, which doesnt exactly scream modern playability, but any time a new card goes infinite in so many different ways it is worth mentioning at the very least
This is a nice plan b to any graveyard hate
The build path is rather narrow, but it has plenty of power
Chronicles and Renaissance , but Ice Age originally was supposed to have a lot more reprints until they realized that reprinted cards aren't going to be the most well-accepted by the market
Here are a few well-known staples for each format: Starting at 0.02 We are in the bulk territory
I will leave you with the following words of advice: if you see me on MTG Arena (account name REZ), please let me win, I could really use the boost