---
name: "Jace's Sanctum"
mana_cost: "{3}{U}"
cmc: 4
type_line: "Enchantment"
colors: []
color_identity: ["U"]
keywords: ["Scry"]
set: "C19"
set_name: "Commander 2019"
collector_number: "88"
rarity: "rare"
artist: "Adam Paquette"
oracle_id: "22d7048e-d538-4fd3-9fb3-2e99e74875fe"
canonical_url: "https://avascry.com/printing/jaces-sanctum-c19"
legalities:
  commander: "legal"
  standard: "not_legal"
  modern: "legal"
  pioneer: "legal"
  legacy: "legal"
  vintage: "legal"
  pauper: "not_legal"
  penny: "legal"
---

# Jace's Sanctum
- **Mana Cost:** `{3}{U}` (CMC: 4)
- **Type:** Enchantment
- **Keywords:** Scry

## Oracle Text
Instant and sorcery spells you cast cost {1} less to cast.
Whenever you cast an instant or sorcery spell, scry 1.

## Top 4096-Dim Neural Synergies
1. [Archmage of Runes](/printing/archmage-of-runes-fdn.md) — Creature — Giant Wizard
2. [Arcane Melee](/printing/arcane-melee-c13.md) — Enchantment
3. [Case of the Ransacked Lab](/printing/case-of-the-ransacked-lab-mkm.md) — Enchantment — Case
4. [Eyes of the Watcher](/printing/eyes-of-the-watcher-5dn.md) — Enchantment
5. [Jace's Defeat](/printing/jaces-defeat-hou.md) — Instant
6. [Oath of Jace](/printing/oath-of-jace-cmm.md) — Legendary Enchantment

## Printing Details
- **Set:** Commander 2019 (C19) #88
- **Rarity:** Rare
- **Artist:** Adam Paquette

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

## Official Rulings
- *(2015-06-22)* The first ability of Jace’s Sanctum can’t reduce the colored mana requirement of an instant or sorcery spell.
- *(2015-06-22)* Jace’s Sanctum’s scry ability will resolve before the instant or sorcery spell that caused it to trigger.
- *(2015-06-22)* If there are additional costs to cast an instant or sorcery spell, apply those before applying cost reductions.
- *(2015-06-22)* Jace’s Sanctum can reduce alternative costs such as miracle or overload costs.