Since so many sweepers that are commonly played deal damage, just prevent it once from Prahv and you will stop so much other stuff
I like to think of it like a handy notebook for spontaneous card ideas
Sure, its a one note strategy, but going full bonk on your opponent is both hilarious and surprisingly effective
Meanwhile, Plumb the Forbidden is especially potent, allowing us to sacrifice our entire board for just two mana, which not only offers a ton of card advantage but also a potential artistocrats-style combo kill with Bastion of Remembrance
In variants of these decks utilizing Mox Diamond it gives the decks a way to utilize future Diamonds and also recoup the loss of the land pitched to an initial Diamond
Most cost reduction is balanced out by not affecting colored costs, but Eluge, the Shoreless Sea just erases a blue pip in the costs of your blue spells