how many cards for a yugioh deck Top 10 Deck-Out How many decks is too

With four Attune with Aether in the deck, you will only need 21 lands to complete the mana base

2 Coin Condition Markers

On the topic of Darkness attackers, Weavile G (G) recently won a DP-AR (DPPT) tournament

(Create an Incubator token with X +1/+1 counters on it and ": Transform this token." It transforms into a 0/0 Phyrexian artifact creature.) Creature - Phyrexian Brimaz, Blight of Oreskos Whenever you cast a Phyrexian creature or artifact creature spell, incubate X, where X is that spell's mana value

Compare this to the 2,023 decks playing Chancellor of the SpiresChancellor of the Spires, or the 3,003 running Memory PlunderMemory Plunder

Every time this card does combat damage to other players, you can choose to exile any of your nonland permanents and return them back into play, also retriggering their ETB abilities