---
name: "Underdome"
mana_cost: "N/A"
cmc: 0
type_line: "Land"
colors: []
color_identity: []
keywords: []
set: "UND"
set_name: "Unsanctioned"
collector_number: "86"
rarity: "common"
artist: "Matt Gaser"
oracle_id: "8375aaaa-edc2-4a0c-98f6-af07d61ebd0a"
canonical_url: "https://avascry.com/printing/underdome-und"
legalities:
  commander: "not_legal"
  standard: "not_legal"
  modern: "not_legal"
  pioneer: "not_legal"
  legacy: "not_legal"
  vintage: "not_legal"
  pauper: "not_legal"
  penny: "not_legal"
---

# Underdome
- **Mana Cost:** `N/A` (CMC: 0)
- **Type:** Land

## Oracle Text
{T}: Add {C}.
{T}: Add one mana of any color. Spend this mana only to pay Un-costs.

> *In that battleground of a ring, the rules aren't nearly so black and white.*

## Top 4096-Dim Neural Synergies
1. [School of the Unseen](/printing/school-of-the-unseen-all.md) — Land
2. [Unknown Shores](/printing/unknown-shores-thb.md) — Land
3. [Artifact Unknown Shores](/printing/artifact-unknown-shores-unk.md) — Artifact Land
4. [Shimmering Grotto](/printing/shimmering-grotto-pc2.md) — Land
5. [Underground River](/printing/underground-river-6ed.md) — Land
6. [Crumbling Vestige](/printing/crumbling-vestige-f16.md) — Land

## Printing Details
- **Set:** Unsanctioned (UND) #86
- **Rarity:** Common
- **Artist:** Matt Gaser

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