---
name: "The Mightstone and Weakstone"
mana_cost: "{5}"
cmc: 5
type_line: "Legendary Artifact — Powerstone"
colors: []
color_identity: []
keywords: []
set: "BRO"
set_name: "The Brothers' War"
collector_number: "238"
rarity: "rare"
artist: "Ryan Pancoast"
oracle_id: "c396db03-bf11-4e20-b630-4f9aa8fd78da"
canonical_url: "https://avascry.com/printing/the-mightstone-and-weakstone-bro"
legalities:
  commander: "legal"
  standard: "not_legal"
  modern: "legal"
  pioneer: "legal"
  legacy: "legal"
  vintage: "legal"
  pauper: "not_legal"
  penny: "legal"
---

# The Mightstone and Weakstone
- **Mana Cost:** `{5}` (CMC: 5)
- **Type:** Legendary Artifact — Powerstone

## Oracle Text
When The Mightstone and Weakstone enters, choose one —
• Draw two cards.
• Target creature gets -5/-5 until end of turn.
{T}: Add {C}{C}. This mana can't be spent to cast nonartifact spells.
(Melds with Urza, Lord Protector.)

## Top 4096-Dim Neural Synergies
1. [Urza, Lord Protector](/printing/urza-lord-protector-pbro.md) — Legendary Creature — Human Artificer
2. [Splitting the Powerstone](/printing/splitting-the-powerstone-bro.md) — Sorcery
3. [A-Splitting the Powerstone](/printing/a-splitting-the-powerstone-bro.md) — Instant
4. [Stone Retrieval Unit](/printing/stone-retrieval-unit-bro.md) — Artifact Creature — Construct
5. [A-Mightstone's Animation](/printing/a-mightstones-animation-bro.md) — Enchantment — Aura
6. [Geology Enthusiast](/printing/geology-enthusiast-prm.md) — Creature — Human Artificer

## Printing Details
- **Set:** The Brothers' War (BRO) #238
- **Rarity:** Rare
- **Artist:** Ryan Pancoast
- **Total Printings:** 2 across all historical editions

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