As for my favorite or best performing archetype of the format, it may be surprising to some, but it's been Golgari-based decks
Overwhelming Splendor shuts down all activated abilities of other cards that the player controls, and they cannot activate loyalty abilities of their planeswalkers either
For 2 black mana, proliferate
Let the deck work its way up to nuclear bomb creatures while flooding my board with multiple enchantment copies of my cheaper creatures
All of Knuckles the Echidna, Hellkite Tyrant, and Revel in Riches automatically win the game if you have a certain number of artifacts (with Revel in Riches requiring specifically Treasure tokens)
You can use this to temporarily deal with a problem creature, or re-use an enters trigger on one of your own