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Leyline Immersion

Enchantment — Aura

Enchant legendary creature
Enchanted creature has ward {2} and "{T}: Add five mana in any combination of colors. Spend this mana only to cast spells."

CMC
4
Mana cost
{3}{G}
Color identity
G
Rarity
rare
Set
March of the Machine: The Aftermath
Price
$1.21
EDHREC rank
#5864
Buy on TCGplayer
Leyline Immersion card art
Leyline Immersion turns any enchanted creature into a mana engine that can float up to seven mana per tap, making it one of the most explosive accelerants available to green-blue spell-slinging and big-creature strategies. The five-mana setup cost is real, but shells built around Kiora, Sovereign of the Deep or bounce loops with Cloudstone Curio can convert that investment into same-turn game-ending mana the moment it resolves.

Best Commanders

Commanders with the highest synergy

01
Kiora, Sovereign of the Deep

Kiora, Sovereign of the Deep

14.6% of decks · synergy 0.14

Kiora, Sovereign of the Deep triggers on casting Krakens, Leviathans, Octopuses, and Serpents, and Leyline Immersion slapped on a large sea creature means each subsequent monster can pay for itself and then some — the enchantment essentially funds the cascade of free casts Kiora wants to chain together.

02
Kalamax, the Stormsire

Kalamax, the Stormsire

14.0% of decks · synergy 0.13

Kalamax, the Stormsire copies the first instant you cast each turn, and Leyline Immersion on Kalamax converts the commander's growing power into obscene mana generation — the bigger Kalamax gets from copying spells, the more mana the aura produces, creating a feedback loop that collapses the game in a few untap steps.

03
Kona, Rescue Beastie

Kona, Rescue Beastie

9.8% of decks · synergy 0.09

Kona, Rescue Beastie cheats large creatures into play repeatedly, and Leyline Immersion on any of those free bodies immediately turns a tempo play into a mana surplus — one enchanted creature can single-handedly power out the rest of the hand.

Format Analysis

Where it lives, where it can’t

FormatVerdict
commander legal
legacy legal
modern legal
pioneer legal
standard not legal
vintage legal
pauper not legal
oathbreaker legal

Commander is where Leyline Immersion does its best work: slower pacing gives the five-mana investment time to pay off, and the format's abundance of large creatures and untap effects means the aura rarely sits idle for long. In Modern and Pioneer it's fringe at best — five mana for a single-target aura that dies to any removal targeting the creature is a steep ask in formats that punish that kind of two-for-one risk. Legacy and Vintage have faster, more resilient mana engines available, so Leyline Immersion doesn't crack those competitive pools. Oathbreaker occupies similar space to Commander and the card functions there for the same reasons.

Key Combos

Combo lines featuring this card

Price Context

Current price

$1.21 cheap tier

At $1.21, Leyline Immersion sits in impulse-buy territory — cheap enough to slot in without deliberation for any deck that wants it. Given its role in established combo shells and its unique effect, that price is likely a floor rather than a ceiling as the card sees more play.

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Sources

Mentioned

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Updated . Data from Scryfall, EDHREC, and Commander Spellbook.