Red Mana Battery
Fourth Edition — Rare
Artifact
Sets Red Mana Battery has been printed in:

Fourth Edition — Rare
Artifact
Sets Red Mana Battery has been printed in:

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Land
Dwarven Hold enters tapped.
You may choose not to untap Dwarven Hold during your untap step.
At the beginning of your upkeep, if Dwarven Hold is tapped, put a storage counter on it.
, Remove any number of storage counters from Dwarven Hold: Add for each storage counter removed this way.
Land
Mercadian Bazaar enters tapped.
: Put a storage counter on Mercadian Bazaar.
, Remove any number of storage counters from Mercadian Bazaar: Add for each storage counter removed this way.
Artifact
: Add . Put a charge counter on Vulshok Factory.
, , Sacrifice Vulshok Factory: Create an X/X colorless Golem artifact creature token with haste, where X is the number of charge counters on Vulshok Factory. Activate only as a sorcery.
Legendary Artifact // Legendary Land — Cave
When Brass's Tunnel-Grinder enters, discard any number of cards, then draw that many cards plus one.
At the beginning of your end step, if you descended this turn, put a bore counter on Brass's Tunnel-Grinder. Then if there are three or more bore counters on it, remove those counters and transform it. (You descended if a permanent card was put into your graveyard from anywhere.)
Tecutlan, the Searing Rift
(Transforms from Brass's Tunnel-Grinder.)
: Add .
Whenever you cast a permanent spell using mana produced by Tecutlan, the Searing Rift, discover X, where X is that spell's mana value.
Sorcery
Add for each card in target opponent's hand. Until end of turn, you don't lose this mana as steps and phases end. Exile Rousing Refrain with three time counters on it.
Suspend 3— (Rather than cast this card from your hand, you may pay and exile it with three time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.)
Legendary Planeswalker — Chandra
At the beginning of your end step, Chandra, Legacy of Fire deals X damage to each opponent, where X is the number of planeswalkers you control.
+1: Add for each planeswalker you control.
0: Remove a loyalty counter from each of any number of permanents you control. Exile that many cards from the top of your library. You may play them this turn.
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