---
name: "What Must Be Done"
mana_cost: "{3}{W}{W}"
cmc: 5
type_line: "Sorcery"
colors: ["W"]
color_identity: ["W"]
keywords: ["Release Juno", "Let the World Burn"]
set: "ACR"
set_name: "Assassin's Creed"
collector_number: "184"
rarity: "rare"
artist: "Syd Mills"
oracle_id: "bd0df0a8-c2ec-4d1f-9ada-cc91f7a20e1a"
canonical_url: "https://avascry.com/printing/what-must-be-done-acr"
legalities:
  commander: "legal"
  standard: "not_legal"
  modern: "legal"
  pioneer: "not_legal"
  legacy: "legal"
  vintage: "legal"
  pauper: "not_legal"
  penny: "legal"
---

# What Must Be Done
- **Mana Cost:** `{3}{W}{W}` (CMC: 5)
- **Type:** Sorcery
- **Keywords:** Release Juno, Let the World Burn

## Oracle Text
Choose one —
• Let the World Burn — Destroy all artifacts and creatures.
• Release Juno — Return target historic permanent card from your graveyard to the battlefield. It enters with two additional +1/+1 counters on it if it's a creature. (Artifacts, legendaries, and Sagas are historic.)

## Top 4096-Dim Neural Synergies
1. [Cleansing Nova](/printing/cleansing-nova-c21.md) — Sorcery
2. [Moment of Reckoning](/printing/moment-of-reckoning-sos.md) — Sorcery
3. [Austere Command](/printing/austere-command-clb.md) — Sorcery
4. [Merciless Eviction](/printing/merciless-eviction-c16.md) — Sorcery
5. [Remember the Fallen](/printing/remember-the-fallen-2xm.md) — Sorcery
6. [Ultima](/printing/ultima-pfin.md) — Sorcery

## Printing Details
- **Set:** Assassin's Creed (ACR) #184
- **Rarity:** Rare
- **Artist:** Syd Mills
- **Total Printings:** 17 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`