Best of 1 is just a single game, Best of 3 involves sideboarding for the second and third games, which aligns with how Magic tournament play goes
Whereas January's Alchemy rebalance mainly focused on curbing overpowered decks, or slightly boosting those that were falling behind, this month's changes appear more experimental
Pyroclasm is great, as it is a spell you can cast during the combo as well of course a great play against aggro
This release was more like a hey, heres a new thing, try it out intro pack used for demos and early promotion
Aladdin's Ring costs 8 mana not just to play, but to also activate its ability
Exiling those artifacts (rather than destroying them) is an upside, but way too little to make up for Ruinous Rampage's lack of a destroy all creatures mode