---
name: "Thassa's Intervention"
mana_cost: "{X}{U}{U}"
cmc: 2
type_line: "Instant"
colors: ["U"]
color_identity: ["U"]
keywords: []
set: "PRM"
set_name: "Magic Online Promos"
collector_number: "79957"
rarity: "rare"
artist: "Zack Stella"
oracle_id: "f7c89d03-606e-4284-90dd-64b1fbebfb4d"
canonical_url: "https://avascry.com/printing/thassas-intervention-prm"
legalities:
  commander: "legal"
  standard: "not_legal"
  modern: "legal"
  pioneer: "legal"
  legacy: "legal"
  vintage: "legal"
  pauper: "not_legal"
  penny: "legal"
---

# Thassa's Intervention
- **Mana Cost:** `{X}{U}{U}` (CMC: 2)
- **Type:** Instant

## Oracle Text
Choose one —
• Look at the top X cards of your library. Put up to two of them into your hand and the rest on the bottom of your library in a random order.
• Counter target spell unless its controller pays twice {X}.

## Top 4096-Dim Neural Synergies
1. [Supreme Will](/printing/supreme-will-j25.md) — Instant
2. [Spellshift](/printing/spellshift-plc.md) — Instant
3. [Thassa's Oracle](/printing/thassas-oracle-thb.md) — Creature — Merfolk Wizard
4. [Confounding Riddle](/printing/confounding-riddle-lci.md) — Instant
5. [Discombobulate](/printing/discombobulate-10e.md) — Instant
6. [Thwart](/printing/thwart-mmq.md) — Instant

## Printing Details
- **Set:** Magic Online Promos (PRM) #79957
- **Rarity:** Rare
- **Artist:** Zack Stella
- **Total Printings:** 15 across all historical editions

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