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Heart of the Mountain{2}
Card name

Arcane Signet

Artifact

SLDSecret Lair Drop#916rare
Borderless

Thráin I came to Erebor and became King under the Mountain. There he found the Arkenstone, Heart of the Mountain.

Promo
Promo
Finishes
Foil
Border
borderless
Security stamp
oval
Frame
2015
Illustrator
Toni Infante
Printings93Combos2EDHREC rank#3
CommanderLegalModernLegalStandardNot legal
Format legality

Constructed

StandardNot legal
PioneerLegal
ModernLegal
LegacyLegal
VintageLegal
PauperLegal

Commander

CommanderLegal
Pauper CommanderLegal
Duel CommanderLegal
PreDHNot legal
OathbreakerLegal
Tiny LeadersLegal

Arena

AlchemyLegal
HistoricLegal
TimelessLegal
BrawlLegal
Standard BrawlLegal
Competitive BrawlLegal
GladiatorLegal

Other

PremodernNot legal
Old SchoolNot legal
Penny DreadfulNot legal
Future StandardNot legal
{T}: Add one mana of any color in your commander's color identity.
Plays as:
Mana FixerMana RockCommander Synergy
Market · per finishspark updated 39m ago · prices as of 2026-08-30
Foil-58.3%
$42.46
$38.00 lowTCGplayer
Cheapest playable copy$0.38· across 93 printings· view the cheapest printing ›

Rulings

3 · latest Nov 10, 2020
  • WotCNov 10, 2020

    If you don't have a commander, Arcane Signet's ability produces no mana.

  • WotCNov 10, 2020

    If you have two commanders, the ability adds one mana of any color in their combined color identities.

  • WotCNov 10, 2020

    If your commander is a card that has no colors in its color identity, Arcane Signet's ability produces no mana. It doesn't produce {C}.

Open in:ScryfallTCGplayer(affiliate)EDHREC