Replenish Sideboard Strategy

Don't build your sideboard from scratch on tournament morning. Before a big event, start from a pool of 85–90 cards you trust, then cut down from there based on what you expect to face locally.

1. Start Broad: Keep a wide pool of 85–90 cards, covering archetype options and specific bullets.
2. Assess the Metagame: A field full of red and aggressive tribal decks calls for board sweepers (Wrath of God, Sphere of Law). A field full of blue permission decks calls for mana taxers (Defense Grid) and solid midrange threats.
3. Prioritize Utility Slots: Rank your flex cards by raw power and how many matchups they help in.
4. Cut Strategically: Drop narrow bullets that don't earn their slot in at least two important matchups.
5. Lock In Transformation Packages: Only keep a post-board pivot if it flips a bad Game 1 into a good one against several common decks.
6. Main vs. Side Positioning: Decide what goes maindeck versus sideboard based on how often you expect each matchup.

The Creature Sideboard Package: Exalted Angel and Meddling Mage let you turn into an aggressive midrange deck after boarding. That puts opponents in a bind: keep all their anti-enchantment and graveyard hate and they get beaten down by fliers; cut some hate to respect your creatures and they get run over by the combo.

Transforming Against Control

Against heavy blue permission decks, you change what the deck is. Card-draw engines like Frantic Search, reactive pieces like Parallax Wave, and extra spot removal come out. In come Defense Grid, Exalted Angel, Abeyance, Arcane Denial, and a full set of Meddling Mage. Turning into a proactive midrange beatdown deck throws off everything they boarded in expecting a slow combo game.

Keeping the Combo Against Aggro

Against linear aggro decks, leave the combo engine fully intact so you can race. Just swap out situational interaction—for example, trim Seal of Cleansing when the opponent has no enchantments or artifacts worth hitting.

Retiring Mages Against Green and Midrange

Against heavy green midrange and attrition decks (The Rock, RG Ponza, Terrageddon), Meddling Mage comes out. Their creatures outclass a 2/2, and their plan rarely hinges on one specific spell you can name. Bring in Exalted Angel instead to take over combat and the life race.

Exalted Angel is the Universal Default

Exalted Angel comes in against just about every non-combo opponent—aggro, control, and midrange alike. The only time it stays out is against fast combo decks (Enchantress, the mirror, Elves), where slowing down your own combo is fatal. If you're not sure what a non-combo opponent is doing, bringing in Angel is almost always right.

Frantic Search is the First Trim

Frantic Search is usually the first trim against blue control and discard-heavy decks, where losing a card on resolution (-1 on cast) hurts too much. Keep the full set against fast aggro and combo, where getting going on turn three is everything.

Core Trimming Rules Post-Board

• Against Blue Control: Trim Intuition and Frantic Search so they can't get easy 2-for-1s with their counters.
• Against Non-Creature Shells: Cut some Swords to Plowshares. Be careful, though—a lot of control pilots bring in creature clocks (Meddling Mage, Exalted Angel) after board, so keep 1 or 2 removal spells around.
• Against Red Blast Suites (Sligh, Ponza): Trim expensive or card-negative blue engines like Intuition and Frantic Search so you don't hand them huge tempo trades with one-mana blasts like Pyroblast or Red Elemental Blast.