How it grades
Fundamentals 64/100. Plays like Spellslinger.
This reads as Spellslinger, built around Jeleva, Nephalia's Scourge. The spells are the deck: every instant and sorcery triggers payoffs (drain, tokens, copies, treasure), so chaining cheap cantrips is the game plan. Creature count stays low by design; protect the two or three payoff engines and the velocity does the rest. Jeleva, Nephalia's Scourge sits on the cEDH tier list, so the ceiling here is tournament-grade, and experienced tables will treat it that way. Its strongest fundamental is land count (40 lands. About 40 fits this curve for Spellslinger, with your cost reduction counted); the first thing to tighten is commander synergy: Only 19 of 59 spells play into your commanders' plan; they want enters-the-battlefield, theft support. Counts the builds players run with your commanders (Spellslinger, Theft, Mill; from EDHREC).
- B-Mana reliability
- A+Land count
- AMana curve
- C+Ramp
- B+Card draw
- A+Interaction
- CCommander synergy
- AWin conditions
- B-Card quality
- A+Legality & size
Where it falls short
- B-Mana reliability73% of your spells arrive on time. Phthisis is the riskiest: its B cost is heavy for this mana base, so expect it several turns late.
- C+Ramp6 ramp effects (want 10+ for this curve for Spellslinger, your cost reduction counted).
- B+Card draw9 draw effects (want 11+ for Spellslinger).
- CCommander synergyOnly 19 of 59 spells play into your commanders' plan; they want enters-the-battlefield, theft support. Counts the builds players run with your commanders (Spellslinger, Theft, Mill; from EDHREC).
- B-Card qualityMedian EDHREC rank #9,288
Strong on land count, mana curve, interaction, win conditions and legality & size.
89 cards graded: A- 3, B+ 15, B 50, B- 12, C+ 5, C 2, C- 1, D 1. The command zone is the plan, so it isn't graded.
Upgrades
Made together, they take Mind Seize from C+ to B-.

Archmage of Runes3UU$3.99
In place of Arcane Melee: expensive for ramp: the help arrives late (58/100)
Fills the ramp gap (you're at 6 of 10+). Pays off your instant-and-sorcery engine (23 producers). Fits the instant-and-sorcery build players run with your commanders.

Niv-Mizzet, ParunUUURRR$5.27
In place of Curse of Chaos: weakest slot in the deck (61/100)
Fills the draw gap (you're at 9 of 11+). Pays off your card-draw engine (15 producers). Works with the commander directly.

Dualcaster Mage1RR$4.36
In place of Terra Ravager: doesn't ramp, draw, interact or threaten. What is it for? (31/100)
Top-5% staple by play data. Fits the commander's plan. Pays off your instant-and-sorcery engine (23 producers).

Faithless LootingR$0.44
In place of Annihilate: weakest slot in the deck (62/100)
Fuels your instant-and-sorcery payoffs (7 in deck). Fits the graveyard build players run with your commanders. Fills the draw gap (you're at 9 of 11+).

Treasure Cruise7U$0.32
In place of Baleful Force: weakest slot in the deck (63/100)
Fills the draw gap (you're at 9 of 11+). Fuels your instant-and-sorcery payoffs (7 in deck). Fits the graveyard build players run with your commanders.

Warren Soultrader2B$18.85
In place of Obelisk of Grixis: weakest slot in the deck (62/100)
Fills the ramp gap (you're at 6 of 10+). Works with the commander directly. Top-5% staple by play data.

Jeska's Will2R$41.87
In place of Armillary Sphere: weakest slot in the deck (66/100)
WotC game-changer. EDHREC Spellslinger staple. Fills the ramp gap (you're at 6 of 10+).

Return the FavorRR$1.17
In place of Diviner Spirit: doesn't ramp, draw, interact or threaten. What is it for? (35/100)
Pays off your instant-and-sorcery engine (23 producers). Fuels your instant-and-sorcery payoffs (7 in deck). Fits the instant-and-sorcery build players run with your commanders.

Reflections of Littjara4U$2.86
In place of Fissure Vent: conditional removal: dead against some boards (44/100)
Pays off your instant-and-sorcery engine (23 producers). Fits the instant-and-sorcery build players run with your commanders. Top-5% staple by play data.

Narset's ReversalUU$3.03
In place of Eye of Doom: weakest slot in the deck (46/100)
Pays off your instant-and-sorcery engine (23 producers). Fuels your instant-and-sorcery payoffs (7 in deck). Fits the instant-and-sorcery build players run with your commanders.
Save a copy to try them. The editor's Improve list has these and more, with the swaps one click each.
Decklist
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Prices are current market estimates, not what the sealed product costs. Magic: The Gathering is © Wizards of the Coast.
