---
name: "Keening Stone"
mana_cost: "{6}"
cmc: 6
type_line: "Artifact"
colors: []
color_identity: []
keywords: ["Mill"]
set: "C16"
set_name: "Commander 2016"
collector_number: "259"
rarity: "rare"
artist: "Jung Park"
oracle_id: "d0f06250-25a5-4003-8f3a-6d85ef32ea10"
canonical_url: "https://avascry.com/printing/keening-stone-c16"
legalities:
  commander: "legal"
  standard: "not_legal"
  modern: "legal"
  pioneer: "not_legal"
  legacy: "legal"
  vintage: "legal"
  pauper: "not_legal"
  penny: "legal"
---

# Keening Stone
- **Mana Cost:** `{6}` (CMC: 6)
- **Type:** Artifact
- **Keywords:** Mill

## Oracle Text
{5}, {T}: Target player mills X cards, where X is the number of cards in that player's graveyard.

> *As it spins, dead voices shriek in an ever-increasing cacophony, rending the mind asunder.*

## Top 4096-Dim Neural Synergies
1. [Millstone](/printing/millstone-atq.md) — Artifact
2. [Grindstone](/printing/grindstone-wc98.md) — Artifact
3. [Whetstone](/printing/whetstone-usg.md) — Artifact
4. [Sands of Delirium](/printing/sands-of-delirium-m13.md) — Artifact
5. [Eerie Gravestone](/printing/eerie-gravestone-msc.md) — Artifact
6. [Grinding Station](/printing/grinding-station-5dn.md) — Artifact

## Printing Details
- **Set:** Commander 2016 (C16) #259
- **Rarity:** Rare
- **Artist:** Jung Park
- **Total Printings:** 34 across all historical editions

## Format Legalities
Commander: `legal` | Standard: `not_legal` | Modern: `legal` | Pioneer: `not_legal` | Legacy: `legal` | Vintage: `legal` | Pauper: `not_legal` | Penny: `legal`