Churning Reservoir
Artifact
At the beginning of your upkeep, put an oil counter on another target nontoken artifact or creature you control.
, 
: Create a 1/1 red Phyrexian Goblin creature token. Activate only if an oil counter was removed from a permanent you controlled this turn or a permanent with an oil counter on it was put into a graveyard this turn.
- CMC
- 1
- Mana cost
- Color identity
- R
- Rarity
- uncommon
- Set
- Phyrexia: All Will Be One
- Price
- $0.19
- EDHREC rank
- #19031
Churning Reservoir converts every mana you float into a charge counter, then cashes those counters for cards — the more mana-hungry your deck, the more draw it generates. The setup cost is real, but in any deck already producing excess mana, it pays for itself fast.
Format Analysis
Where it lives, where it can’t
| Format | Verdict |
|---|---|
| commander | legal |
| legacy | legal |
| modern | legal |
| pioneer | legal |
| standard | not legal |
| vintage | legal |
| pauper | not legal |
| oathbreaker | legal |
Commander is the correct home for Churning Reservoir — longer games give the counters time to accumulate, and mana-doubling effects like Mana Flare or Vorinclex, Voice of Hunger turn it into a draw engine in a single turn cycle. In competitive 60-card formats like Modern or Legacy, it's too slow and too conditional; those formats punish three-mana do-nothing artifacts that don't impact the board immediately. Pioneer and Vintage are legal but hold no realistic role — the former lacks the mana acceleration density to abuse it, and the latter has strictly better options for card advantage.
Key Combos
Combo lines featuring this card
Price Context
Current price
$0.19 bulk tier
At $0.19, Churning Reservoir sits firmly in bulk territory — the kind of card you pick up without thinking twice when building on a budget. Bulk rares with narrow applications rarely climb unless a breakout Commander archetype adopts them widely, so don't expect the price to move meaningfully.
Explore
Sources
Mentioned
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.