But, Void Winnower goes even beyond that, preventing opponents from casting spells with even converted mana costs. Obviously, this is a Limited bomb that you can likely drop before turn nine in the typical draft or sealed deck, thanks to all of the colorless mana ramp available in that set. But, how good is it in Constructed?
For starters, creature tokens can’t block Void Winnower, since they have a 0 CMC. According to an official judge ruling from Wizards of the Coast, 0 is considered even. Mathematical debates aside, it’s going to be fairly tough to chump block this guy. Then again, plenty of removal options exist at odd converted mana costs, so there are definitely ways to deal with this behemoth.
What Void Winnower seems best at is being a metagame answer to the big even converted mana cost spells in Standard. At the time of Void Winnower's release, these were Ugin, the Spirit Dragon at 8 mana and Ulamog, the Ceaseless Hunger at 10 mana being the chief concerns. With Eldrazi Ramp a legitimate deck archetype, especially in Modern, Void Winnower became a legitimate candidate for sideboard play. It can randomly hose a number of decks if their key cards have even converted mana costs.
Void Winnower Makes Things Not Even in Pioneer
While Void Winnower made a few Top 8 appearances in 2015 and 2017 in Modern, it took awhile for the true power of Void Winnower to be realized. This was a card that for years could be had for as little as a couple of dollars. But, in 2019 with the invention of the Pioneer format - which includes cards from Return to Ravnica forward in its card pool - Void Winnower would soon find new life.
It took until 2020 with the release of Fires of Invention to truly see Void Winnower suddenly become a competitive powerhouse. Fires of Invention is a silly enchantment that gives you the ability to cast just two spells in a turn, but it can be any spell with a mana cost equal to or less than the number of lands you control. That means by turn 9 you can play the Void Winnower and another card in one turn. By that point in the game, it’s going to be tricky to stop the Winnower from taking over the board.
Void Winnower in Commander / EDH
In EDH, Void Winnower is a “just say no” card that will lock some Commanders out of the game. It’s a pretty mean card in the format. While someone will probably find an answer to it in a multiplayer game, it will wreak havoc while it remains in play. It may come down to using Swords to Plowshares on it and gaining the controlling player 11 life. The fact it can help your team get through for extra damage is also another big consideration. Also, because it's colorless, Void Winnower can be included in a wide variety of decks.
Naturally, the Commanders that will want to use Void Winnower the most are those that can sometimes cast him for free (Rakdos, Lord of Riots and Animar, Soul of Elements) or cheat him into play (Mayael the Anima and Jhoira of the Ghitu). Also, with the release of Commander Legends, Void Winnower found a new home in Belbe, Corrupted Observer decks. Belbe’s ability can net you a ton of colorless mana, making Void Winnower easy to cast.
It also helps that Commander Legends also released Apex Devastator, a ten-drop Green creature that cascades 4 times - literally allowing you to play 4 spells that cost 9 mana or less for free in a row straight from your deck. Void Winnower is an obvious include in any deck that features the Devastator.
Pretty much any Commander deck can make use of Void Winnower if you can somehow get him into play on the cheap. Because it doesn't have an on-cast trigger, it's actually a big threat and always worth putting into play no matter how you do it. Void Winnower is definitely a keeper.
How would you use Void Winnower?