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Shadow of the Second Sun

Enchantment — Aura

Enchant player
At the beginning of each of enchanted player's postcombat main phases, there is an additional beginning phase after this phase. (The end step happens after the added untap, upkeep, and draw steps.)

CMC
6
Mana cost
{4}{U}{U}
Color identity
U
Rarity
mythic
Set
Modern Horizons 3
Price
$1.22
EDHREC rank
#3732
Buy on TCGplayer
Shadow of the Second Sun card art
Shadow of the Second Sun gives you an extra upkeep trigger for one mana — every "at the beginning of your upkeep" ability fires twice, which in the right deck is simply a second turn stapled to the first. The cost is negligible; the ceiling with engines like Aggravated Assault or suspend payoffs under Jhoira of the Ghitu is enormous.

Best Commanders

Commanders with the highest synergy

01
Jhoira of the Ghitu

Jhoira of the Ghitu

47.5% of decks · synergy 0.47

Jhoira of the Ghitu suspends cards with time counters that tick down at each upkeep, so Shadow of the Second Sun doubles the clock — every suspended card arrives a full turn earlier than your opponents expect.

02
Gogo, Master of Mimicry

Gogo, Master of Mimicry

44.7% of decks · synergy 0.42

Gogo, Master of Mimicry cares about triggers firing on schedule, and Shadow of the Second Sun adds a redundant upkeep step that lets Gogo's copy and mimic effects resolve twice per rotation around the table.

03
Braids, Conjurer Adept

Braids, Conjurer Adept

40.0% of decks · synergy 0.37

Braids, Conjurer Adept puts permanents into play at the beginning of each upkeep, so Shadow of the Second Sun doubles the deployment rate — your side of the board snowballs twice as fast as opponents expect.

04
Aminatou, Veil Piercer

Aminatou, Veil Piercer

28.4% of decks · synergy 0.27

Aminatou, Veil Piercer decks lean on enchantment triggers and fate-counter manipulation, and Shadow of the Second Sun adds a second upkeep window to squeeze out extra value from every "at the beginning of your upkeep" enchantment in the 99.

05
Lynde, Cheerful Tormentor

Lynde, Cheerful Tormentor

17.5% of decks · synergy 0.16

Lynde, Cheerful Tormentor passes curses during the upkeep, and Shadow of the Second Sun creates a second passage window each turn — curses move faster and the political chaos compounds accordingly.

Format Analysis

Where it lives, where it can’t

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

Shadow of the Second Sun is a Commander card through and through — the "extra upkeep" effect is nearly worthless in 1v1 formats where upkeep triggers are scarce and games end before the engine pays off. It's legal in Legacy, Vintage, and Modern, but sees essentially zero play there; the effect is too slow and too build-around for those formats. In Commander, it's a high-ceiling enabler in any deck running multiple upkeep triggers, and the low mana cost means it rarely feels like a tempo loss to deploy it. Oathbreaker is the one other 60-card-adjacent format where it could see occasional play, but again only in dedicated shells.

Key Combos

Combo lines featuring this card

Price Context

Current price

$1.22 cheap tier

At $1.22, Shadow of the Second Sun sits squarely in budget-staple territory — cheap enough to throw into any upkeep-trigger build without a second thought. It's a niche card with a narrow home, so don't expect the price to move much in either direction.

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Sources

Mentioned

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