If you don’t have much experience playing Legacy, you might not want to start with a Brainstorm deck that confronts you with tough decisions over when to use your Force of Wills. Martin Juza piloted this deck to the Top 8 of the Legacy Challenge on MTGO and had an undefeated record in the Swiss before falling in the quarterfinals. He said afterward that he had to figure out what his opponent’s cards did and what their strategy was, which means this could be the deck for you if you haven’t played much of the format.
Life from the Loam is your top source of card advantage. If you’re going to play a four-color deck without access to blue, you’re going to need a way to stay competitive, and Loam is an excellent way to do so. Whether you’re getting back Wastelands to play the mana denial game, silver bullet lands, cyclers for extra card advantage, or simply returning fetches to thin your deck, Loam is a strategy in and of itself.
Loam isn’t the only source of card advantage, however. Dark Confidant comes at a cost, but you’ve got a lot of 0s and nothing that costs more than 3 in the deck. If they don’t have a quick answer, Bob can bury them. Sylvan Library is even more costly if you want extra cards, but you’ve got tons of shuffle effects and Sylvan is tough for many decks to remove from the battlefield.
With a bunch of bullet lands like Karakas and the Dark Depths plus Thespian Stage combo, Knight of the Reliquary can take over the game. It should already be large the moment it hits the battlefield, and it continues to grow after. While Loam shrinks it, Knight will keep the fuel coming.
You have some excellent uses in this deck for Green Sun’s Zenith thanks to Knight and some silver bullets. A 1-mana Zenith can go get Dryad Arbor to begin ramping. You have a singleton Deathrite Shaman for similar purposes as well as some main-deck graveyard disruption. At 2, you have Gaddock Teeg to shut down some combo decks and prevent cards like Jace, the Mind Sculptor from entering the battlefield, or Supreme Verdict from sweeping it (keep in mind you won’t be able to cast future copies of Green Sun’s Zenith with Teeg on the battlefield).
To add to the disruption plan, you’ve got a playset of Chalice of the Void. You’re looking to cast this on 1 as early as possible against most strategies in Legacy. Not only does this shut down many important blue card draw spells, Delvers, Deathrites, and cards like Dark Ritual and Reanimate, but you only have a single 1-drop! Sometimes you’ll play Chalice for 0 against decks that feature Moxes and Lion’s Eye Diamond, but you have your own Mox Diamonds in your deck as well to help accelerate your many 2-drops and Chalices. Mox plus Loam is a nice way to recoup card disadvantage.
Your creature interaction centers around the Punishing Fire and Grove of the Burnwillows combo. Killing small creatures and returning your Punishing Fire gives you yet more card advantage while keeping the board under control.
Against problematic permanents, you’re leaning on Abrupt Decay. Getting around countermagic is nice and this is a great way to make sure that you’re destroying key permanents in Legacy. For bigger threats, you’re hoping to be able to edict them with Liliana of the Veil. Lili can also continue the card advantage parade in any stalled out game as Dark Confidant, Sylvan, and Loam keep the cards flowing.
This Loam strategy is a great way to attack the format. With tons of ways to kill key creatures, problematic cheap permanents, Wasteland recursion, and Chalice of the Void, you have game against anything Legacy can throw at you!