The first is a Punisher or Stax style deck, the former focusing on attacking all of your opponents' resources in an effort to end the game as quickly and painfully as possible, while the latter is aimed at denying your opponents the ability to play the game at all, killing them slowly but surely through resource denial
Recommended number is between 12 - 20
Shipwreck Looter: Meant for Limited, yet I could see it in Constructed as well with some 'graveyard matters' cards/ Shaper Apprentice: Meant for Limited
While big Angels tend to cost lots of mana, cards like Urza's Incubator , Pearl Medallion , Oketra's Monument and Starnheim Aspirant will definitely help get them out faster
Mercifully, Wizards was quick to reassure players that reprints would be coming to keep these prices in check
Best for Raw Power: The Black Lotus and the Power Nine are historically the strongest due to zero-cost mana acceleration