How it grades
Fundamentals 76/100. Plays like Sliver Tribal.
This reads as Sliver Tribal, built around Sliver Gravemother. A Sliver deck at heart: the creatures share a type on purpose, and lords, payoffs, and type-matters synergies make the whole board bigger than its parts. Tribal decks trade individual card power for critical mass, so keep the sliver count high and let the synergy pay the bills. Its strongest fundamental is land count (37 lands. About 38 fits this curve for Sliver Tribal, with Herald's Horn's discount counted); the first thing to tighten is card draw: 5 draw effects (want 10+ for Sliver Tribal).
- AMana reliability
- A+Land count
- A+Mana curve
- A+Ramp
- CCard draw
- AInteraction
- A+Commander synergy
- AWin conditions
- B+Card quality
- A+Legality & size
Where it falls short
- CCard draw5 draw effects (want 10+ for Sliver Tribal).
- B+Card qualityMedian EDHREC rank #4,833
Strong on mana reliability, land count, mana curve, ramp, interaction, commander synergy, win conditions and legality & size.
93 cards graded: A- 7, B+ 33, B 45, B- 8. The command zone is the plan, so it isn't graded.
Upgrades
Made together, they take Sliver Swarm from B to A-.

Garruk's Uprising2G$0.58
In place of Hollowhead Sliver: weakest slot in the deck (66/100)
Fills the draw gap (you're at 5 of 10+). Pays off your go-wide engine (34 producers). Top-5% staple by play data.

Inspiring Call2G$0.39
In place of Synapse Sliver: weakest slot in the deck (70/100)
Fits the token build players run with your commanders. Fills the draw gap (you're at 5 of 10+). Pays off your go-wide engine (34 producers).

Shamanic Revelation3GG$1.55
In place of Vanquisher's Banner: weakest slot in the deck (71/100)
Fills the draw gap (you're at 5 of 10+). Pays off your go-wide engine (34 producers). Top-5% staple by play data.

Black Market Connections2B$10.53
In place of Distant Melody: weakest slot in the deck (71/100)
Fuels your token payoffs (20 in deck). Is a Sliver for your commanders' plan. Fills the draw gap (you're at 5 of 10+).

Idol of Oblivion2$3.15
In place of Titan of Littjara: weakest slot in the deck (72/100)
Fills the draw gap (you're at 5 of 10+). Fuels your token payoffs (20 in deck). Top-5% staple by play data.

Impact Tremors1R$2.52
In place of Blade Sliver: weakest slot in the deck (56/100)
Pays off your go-wide engine (34 producers). Top-5% staple by play data. Fits the token build players run with your commanders.

Craterhoof Behemoth5GGG$25.05
In place of Descendants' Fury: weakest slot in the deck (59/100)
Pays off your go-wide engine (34 producers). Top-5% staple by play data. Fits the token build players run with your commanders.

Archmage Emeritus2UU$0.61
In place of Clot Sliver: weakest slot in the deck (59/100)
Pays off your instant-and-sorcery engine (11 producers). Fills the draw gap (you're at 5 of 10+). Top-5% staple by play data.

The One Ring4$115.13
In place of Bonesplitter Sliver: weakest slot in the deck (59/100)
WotC game-changer. Keeps the commanders alive. Fills the draw gap (you're at 5 of 10+).

Rhystic Study2U$69.59
In place of Cleaving Sliver: weakest slot in the deck (59/100)
Fills the draw gap (you're at 5 of 10+). Top-5% staple by play data. WotC game-changer.
Save a copy to try them. The editor's Improve list has these and more, with the swaps one click each.
Decklist
Commander 1
Creatures 43
- B+
- B
- B
- B+
- B+
- B
- B
- B+
- B+
- B+
- B
- B
- B+
- B+
- B+
- B+
- B+
- B+
- B
- B
- B
- B
- B+
- B-
- B
- B-
- B
- B-
- B-
- B
- B
- B+
- B+
- B
- B
- B
- B
- B+
- B-
- B+
- B
- B
- B+
Instants 1
- B
Sorceries 10
- B+
- B
- B
- B
- B+
- B
- A-
- A-
- A-
- A-
Artifacts 7
- B
- B+
- A-
- A-
- A-
- B
- B
Enchantments 1
- B-
Lands 37
- B
- B
- B
- B+
- B
- B+
- B+
- B
- B
- B
- B
- B+
- B-
- B+
- B-
- B+
- B
- B+
- B+
- B+
- B
- B+
- B+
- B+
- B
- B
- B×2
- B×2
- B×2
- B×2
- B×3
Prices are current market estimates, not what the sealed product costs. Magic: The Gathering is © Wizards of the Coast.
