It forced me to really pick my brain and search through EDHREC and Scryfall for cards to include, as well as coming to terms with the fact that Skullclamp was just too expensive to play
Utility Level-Up Creatures Lighthouse Chronologist is one of the most powerful level-up creatures, only taking seven extra mana to get it to level seven, at which point it gives us two turns for every one our opponent takes
Talrand, Sky Summoner
It might seem like this card has three different modes, but in most games you will be using either of the two more powerful ones: either kill a creature or kill a creature and make a 1/1 token
While BW decks have access to Cabal Coffers, Crypt Ghast and enchantments like Life Insurance, they tend to have to jump through the hoops of sacrificing their own resources in order to get ahead on mana
Furthermore, since playing these cards is not dependant on color, they can be used in any kind of deck