Commander 2020 · 2020 Commander precon
Symbiotic Swarm upgrade guide
Budget upgrades, cuts and the full decklist for Kathril, Aspect Warper.
Symbiotic Swarm is an Abzan (white-black-green) Commander precon from Commander 2020 (2020), led by Kathril, Aspect Warper. Out of the box it runs 38 lands, 9 ramp pieces, 7 card-draw effects, 6 removal spells and 2 board wipes, with an average mana value of 4.21.
Measured against a typical Commander build, it's lightest on board wipes, card draw, removal and ramp, and 12 of its lands enter tapped. Its game plan leans on lifegain, +1/+1 counters and graveyard, so the plan below favors cards that push that. The $50 plan below makes 10 swaps for $33.64.
Deck health
$50 budget plan
Best upgrades for Symbiotic Swarm
10 swaps for $33.64, built around lifegain and +1/+1 counters and graveyard. Prices as of November 6, 2026.
Add 10
Protection: deck has 1 of ~2 · #13 on EDHREC$3.88
Board wipes: deck has 2 of ~3 · #66 on EDHREC$5.47
Card draw: deck has 7 of ~10 · #38 on EDHREC$4.90
Removal: deck has 6 of ~8 · #11 on EDHREC$1.22
Fits your Lifegain plan · #1,098 on EDHREC$0.93
Fits your +1/+1 counters plan · #281 on EDHREC$0.34
Fits your Graveyard plan · #53 on EDHREC$8.69
Untapped land for black & white · #88 on EDHREC$0.23
Untapped land for black & white · #59 on EDHREC$5.22
Untapped land for green & white · #81 on EDHREC$2.76
Cut 10
Enters tapped — slows your early turns
Enters tapped — slows your early turns
Enters tapped — slows your early turns
Trims you to 37 lands — the deck runs 38
Rarely played (#10,420 on EDHREC) · Costs 6 mana
Rarely played (#8,268 on EDHREC) · Costs 7 mana
Costs 8 mana · Doesn't support the deck's plan
Rarely played (#14,008 on EDHREC) · Doesn't support the deck's plan
Rarely played (#13,963 on EDHREC) · Doesn't support the deck's plan
Costs 7 mana · Doesn't support the deck's plan
Symbiotic Swarm decklist
Commander (1)
- 1Kathril, Aspect Warper$1.00
Creatures (34)
- 1Acidic Slime$0.29
- 1Aerial Responder$0.35
- 1Akroma, Angel of Wrath$3.47
- 1Angel of Finality$0.32
- 1Archon of Valor's Reach$0.36
- 1Avenging Huntbonder$0.26
- 1Cairn Wanderer$0.39
- 1Cartographer's Hawk$0.45
- 1Cataclysmic Gearhulk$0.36
- 1Daring Fiendbonder$0.84
- 1Hornet Queen$0.33
- 1Kalemne's Captain$0.24
- 1Karametra, God of Harvests$4.00
- 1Majestic Myriarch$0.37
- 1Nikara, Lair Scavenger$0.95
- 1Nyx Weaver$0.32
- 1Odric, Lunarch Marshal$0.61
- 1Reveillark$0.55
- 1Sakura-Tribe Elder$0.51
- 1Satyr Wayfinder$0.31
- 1Skullwinder$0.15
- 1Slippery Bogbonder$4.19
- 1Solemn Recruit$0.25
- 1Soul of Innistrad$0.33
- 1Soulflayer$0.31
- 1Splinterfright$0.27
- 1Sunblast Angel$0.94
- 1Tayam, Luminous Enigma$3.40
- 1Titanoth Rex$0.35
- 1Vampire Nighthawk$0.36
- 1Vitality Hunter$0.29
- 1Void Beckoner$0.27
- 1Yannik, Scavenging Sentinel$0.38
- 1Zetalpa, Primal Dawn$0.35
Planeswalkers (1)
- 1Ajani Unyielding$0.72
Instants (6)
- 1Abzan Charm$0.39
- 1Blood Curdle$0.21
- 1Deathsprout$0.36
- 1Despark$0.37
- 1Grisly Salvage$0.32
- 1Obscuring Haze$4.91
Sorceries (7)
- 1Cultivate$0.71
- 1Duneblast$0.33
- 1Ever After$0.33
- 1Harmonize$0.24
- 1Selective Adaptation$0.31
- 1Unbreakable Bond$0.24
- 1Unburial Rites$0.33
Artifacts (7)
- 1Arcane Signet$0.79
- 1Bonder's Ornament$0.74
- 1Commander's Sphere$0.26
- 1Mimic Vat$0.62
- 1Netherborn Altar$0.43
- 1Sol Ring$1.83
- 1Swiftfoot Boots$2.97
Enchantments (6)
- 1Abzan Ascendancy$0.34
- 1Deadbridge Chant$0.36
- 1Martial Impetus$0.12
- 1Parasitic Impetus$0.20
- 1Predatory Impetus$0.17
- 1Together Forever$0.31
Lands (38)
- 1Blighted Woodland$0.36
- 1Blossoming Sands$0.18
- 1Canopy Vista$0.32
- 1Caves of Koilos$0.91
- 1Command Tower$0.34
- 1Evolving Wilds$0.14
- 1Exotic Orchard$0.30
- 2Forest$0.64
- 1Forest$0.19
- 1Forest$0.22
- 1Gavony Township$5.22
- 1Golgari Rot Farm$0.30
- 1Grim Backwoods$0.33
- 1Jungle Hollow$0.17
- 1Krosan Verge$0.27
- 1Memorial to Folly$0.26
- 1Myriad Landscape$0.35
- 1Nesting Grounds$0.30
- 1Orzhov Basilica$0.31
- 3Plains$0.83
- 2Plains$0.17
- 2Plains$0.16
- 1Sandsteppe Citadel$0.34
- 1Scoured Barrens$0.26
- 1Selesnya Sanctuary$0.32
- 1Sungrass Prairie$0.30
- 3Swamp$1.01
- 2Swamp$0.17
- 2Swamp$0.19
FAQ
How much is the Symbiotic Swarm precon worth?
At current prices the 100 cards in Symbiotic Swarm are worth about $66.90 as singles (cheapest printings, TCGplayer market price as of November 6, 2026).
What are the best budget upgrades for Symbiotic Swarm?
For about $33.64, our top picks are Lightning Greaves, Toxic Deluge, Skullclamp, Swords to Plowshares, Exemplar of Light. The full 10-card plan with cuts is above, and the upgrade tool can rebuild it for any budget.
What should I cut from Symbiotic Swarm?
Start with Memorial to Folly, Blossoming Sands, Krosan Verge, Blighted Woodland. These are the least-played or slowest cards that don't support the deck's plan.
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