With the suspension of
Brainstorm

The Cards
5. Yasharn, Implacable Earth

Yasharn, Impacable Earth is another great option to pick up. This decent sized creature will prevent our opponents from sacrificing anything to activate abilities, which is the whole strategy shut down. This also pulls some basics out of our deck to thin the deck a bit more to find relevant spells, but the second ability is where this shines. A bit part of the game plan of Jund Sac is to sacrifice things with
Mayhem Devil

4. Scavenging Ooze

Scavenging Ooze


Whenever Kroxa enters or attacks, each opponent discards a card, then each opponent who didn't discard a nonland card this way loses 3 life.
Escape—{B}{B}{R}{R}, Exile five other cards from your graveyard. (You may cast this card from your graveyard for its escape cost.)
. This also counters the life drain that the cat would do to us as well. This also can provide a sizeable threat to battle with.
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3. Relic of Progenitus

The next option is
Relic of Progenitus

{1}, Exile this artifact: Exile all graveyards. Draw a card.
. If this comes down early enough, it can eat up any relevant cards in our opponent’s graveyard, and if it comes down late, it can exile all of the cards in our opponent’s yard, and it replaces itself. This is a super versatile card that can fit in any deck since it’s an artifact, and it’s a common so it’s pretty cheap to craft.
READ MORE: The Best X Spells In Commander
2. Devout Decree

Devout Decree


Whenever Korvold enters or attacks, sacrifice another permanent.
Whenever you sacrifice a permanent, put a +1/+1 counter on Korvold and draw a card.
,
Mayhem Devil


Sacrifice another creature: Scry 1.
Escape—{3}{B}{B}, Exile four other cards from your graveyard. (You may cast this card from your graveyard for its escape cost.)
This creature escapes with two +1/+1 counters on it.
. While this is a sorcery, it’s cheap enough that we’re most likely able to play this and advance our game as well, so it’s not a huge ask.
- Rest in Peace

Rest in Peace

If a card or token would be put into a graveyard from anywhere, exile it instead.
is the best card to counteract the sacrifice game plan of Jund. It’s a 2 mana enchantment and you just set it and forget it. This deals with the cat oven engine, and deals with Woe Strider. If you’re playing white you definitely should be playing this in your sideboard.