With the help of cards like Cosmic Intervention, Teleportation Circle, and Ephemerate, it's clear this sort of deck has been getting a lot of love over the last few years
While skipping one-drops is doable, especially in slower decks, not being able to play three-drops as well means that playing Gyruda, Doom of Depths as your companion essentially means that you're guaranteeing you'll cast a maximum of four mana worth of spells (two two-drops) across the first three turns of the game, which is certainly too slow for older formats like Modern and Pioneer, and likely too slow for Standard as well
Typically, only one of these cards is face up at a time
Necropotence Although Ive not played with the card much myself, Ive probably witnessed far more than one-thousand life get funneled into Necropotence across all the games Ive played
Whats the right deck, you ask