Doom Prevails Upgrade Guide: 5 Best Cards and 5 Budget Picks

Doom Prevails is the Grixis (blue, black, red) deck in Marvel Super Heroes, and it is a villain's buffet. Led by Doctor Doom, King of Latveria, it leans on three connected ideas: connive to filter your draws and grow your creatures, discard lands to fuel Doom's life drain, and grind the table down with a roster of iconic bad guys. There is also a second commander in the box, Loki, the Deceiver, who many players think is the more powerful option.

This deck ships with a lot of flavor and a little less focus. The upgrade job is to pick a direction, support the connive and discard engine properly, and trim the cards that are there for the comic-book cameo rather than the gameplay.

Doom Prevails is the Grixis (blue, black, red) Marvel Super Heroes precon led by Doctor Doom, King of Latveria, and the strongest build moves Loki, the Deceiver into the command zone instead. Five budget upgrades - Doctor Octopus, Carnage, An Offer You Can't Refuse, Bloodline Bidding and Crimson Cowl - cost under $10 combined. Cyclonic Rift (about $40) and Crucible of Worlds (about $34) are the premium adds.

Connive lets you loot and grow at the same time, and Doctor Doom turns your discards into life loss for the table. The strongest direction across the community is to promote Loki, the Deceiver to the command zone, keep Doctor Doom in the 99, and build around cheap villains, reanimation, and discard payoffs. Loki draws you cards off villain combat damage and copies your best villain when he attacks, which abuses every enter-the-battlefield and death trigger you can find.

Best cards regardless of price. Prices shift over time, so use these as rough guides.

Cyclonic Rift (around $40). The premier blue reset button. Overloading it sweeps the wide boards Grixis struggles against while your own villains stay put.

Demonic Tutor (around $70). The deck runs many singleton engines, so a clean tutor that finds Doom, Loki, a board wipe, or a reanimation spell on demand is worth a lot.

Crucible of Worlds (around $34). Doom wants you discarding lands, and this lets you replay them straight from the graveyard. The discard cost turns into pure value.

Green Goblin, Nemesis (around $13). A villain that makes a Treasure every time you discard, bridging Doom's discard plan into real ramp.

Norman Osborn // Green Goblin (around $9). An unblockable conniver that flips into a graveyard engine, letting you recast the cards you connived away at a discount.

All confirmed under about $5 per copy.

Doctor Octopus, Master Planner (around $3). A villain anthem that also refills your hand to eight cards each end step. Card advantage and a team buff in one.

Carnage, Crimson Chaos (around $1). A villain you can cast from your graveyard for two mana, so the copies you connive or discard away are never wasted.

An Offer You Can't Refuse (around $2). A cheap, efficient counterspell to protect your engine or stop a rival's wipe. The precon badly wants more interaction.

Bloodline Bidding (around $2). Mass villain reanimation with convoke, bringing back everything you tossed to connive for one big revenge turn.

Crimson Cowl, Master of Evil (around $2). Makes villain tokens when it attacks and doubles as a fantastic Loki copy target for repeated token generation.

The deck leans on flavor cards that do not pull their weight. Common cuts include The Frightful Four, a near-vanilla body whose ability mostly helps opponents, Klaw, Master of Sound, which has a weak rate and little synergy, and Damocles Base, Sword of Kang, a strong vehicle that is not a villain and lets opponents pick the worse mode. Superior Foes of Spider-Man and Helmut Zemo also get flagged often.

Doom Prevails rewards you for committing to a plan. Switch to Loki, load up on cheap villains and discard payoffs, and add interaction the stock deck lacks. The five budget picks above sharpen the engine for under $10 combined, and Crucible of Worlds plus Cyclonic Rift are the high-end cards that make the whole scheme hum.

Pick a direction first. Promote Loki, the Deceiver to the command zone, keep Doctor Doom in the 99, and build around cheap villains, reanimation and discard payoffs. Then add the interaction the stock list lacks and cut the cameo cards. Five budget picks under $10 combined sharpen the engine before you spend anything on the high end.

Most players move Loki, the Deceiver to the command zone. He draws off villain combat damage and copies your best villain when he attacks, which abuses every enter-the-battlefield and death trigger in the deck. Doctor Doom, King of Latveria is still a fine face commander if you want the discard-to-life-drain plan up front.

It is fun and flavorful but a little unfocused. Several villain cards are included for the comic-book cameo more than the gameplay, and the stock list is light on interaction. A few targeted swaps make it much sharper, which is why the upgrade job here is about picking one plan and supporting the connive and discard engine properly.

Doctor Octopus, Master Planner (about $3) is a villain anthem that also refills your hand to eight each end step. Carnage, Crimson Chaos (about $1) casts from the graveyard for two. An Offer You Can't Refuse (about $2) is the cheap counterspell the deck badly wants. Bloodline Bidding and Crimson Cowl round it out at about $2 each.

The Frightful Four, whose ability mostly helps opponents. Klaw, Master of Sound, a weak rate with little synergy. Damocles Base, Sword of Kang, a strong vehicle that is not a villain and lets opponents pick the worse mode. Superior Foes of Spider-Man and Helmut Zemo are the next two most commonly flagged.

Want the whole set of guides at once? Here are all four Marvel precon upgrade kits in one place.

Upgrading more than one Marvel deck? Here are our other guides:

Sources: Cardboard Chronicles breakdown, Wargamer upgrade guide, EDHLAB upgrade guide, Draftsim upgrade guide. Prices approximate as of June 2026.