Black Mana Battery
Legends — Uncommon
Artifact
Sets Black Mana Battery has been printed in:

Legends — Uncommon
Artifact
Sets Black Mana Battery has been printed in:

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Land
Bottomless Vault enters tapped.
You may choose not to untap Bottomless Vault during your untap step.
At the beginning of your upkeep, if Bottomless Vault is tapped, put a storage counter on it.
, Remove any number of storage counters from Bottomless Vault: Add for each storage counter removed this way.
Land
Subterranean Hangar enters tapped.
: Put a storage counter on Subterranean Hangar.
, Remove any number of storage counters from Subterranean Hangar: Add for each storage counter removed this way.
Enchantment // Land — Cave
Whenever a creature you control attacks alone, it gains deathtouch and lifelink until end of turn. Put a dread counter on Grasping Shadows. Then if there are three or more dread counters on it, transform it.
Shadows' Lair
(Transforms from Grasping Shadows.)
: Add .
, , Remove a dread counter from Shadows' Lair: You draw a card and you lose 1 life.
Land
Spymaster's Vault enters tapped unless you control a Swamp.
: Add .
, : Target creature you control connives X, where X is the number of creatures that died this turn. (Draw X cards, then discard X cards. Put a +1/+1 counter on that creature for each nonland card discarded this way.)
Land
Peat Bog enters tapped with two depletion counters on it.
, Remove a depletion counter from Peat Bog: Add . If there are no depletion counters on Peat Bog, sacrifice it.
Legendary Land
: Add .
Channel — , Discard Takenuma, Abandoned Mire: Mill three cards, then return a creature or planeswalker card from your graveyard to your hand. This ability costs less to activate for each legendary creature you control.
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