Peer Through Depths
Instant — Arcane
Look at the top five cards of your library. You may reveal an instant or sorcery card from among them and put it into your hand. Put the rest on the bottom of your library in any order.
- CMC
- 2
- Mana cost
- Color identity
- U
- Rarity
- common
- Set
- Duel Decks: Mind vs. Might
- Price
- $0.20
- EDHREC rank
- #14742
Peer Through Depths digs five cards deep and puts an instant or sorcery directly into your hand — meaningful selection at instant speed for a single blue mana. It's a staple in River Song decks and any blue spellslinger shell that needs to hit a specific piece on curve.
Best Commanders
Commanders with the highest synergy

River Song
River Song's ability triggers off instants and sorceries cast from your hand, so Peer Through Depths does double duty — it finds the next spell in the chain while itself being the trigger that advances the engine.
Format Analysis
Where it lives, where it can’t
| Format | Verdict |
|---|---|
| commander | legal |
| legacy | legal |
| modern | legal |
| pioneer | not legal |
| standard | not legal |
| vintage | legal |
| pauper | legal |
| oathbreaker | legal |
In Commander, Peer Through Depths earns its slot in spellslinger and spells-matter decks that need cheap cantrip-style selection without sacrificing card advantage depth — five cards is a real look, not a glance. In Pauper it competes in tempo and control shells where cheap instant-speed selection is currency, though Impulse sees more play for its slightly wider scope. Legacy and Vintage have access to so many broken blue spells that Peer Through Depths rarely makes the cut outside of dedicated Arcane synergy lists, where the splice mechanic gives it a second life. It's legal in Modern but practically invisible there — the format has better options at every point on the curve.
Key Combos
Combo lines featuring this card
Price Context
Current price
$0.20 bulk tier
At $0.20, Peer Through Depths is deep bulk — pick it up without a second thought. Bulk commons rarely move on price, so there's no urgency to buying multiples, but at this rate the question is never cost.
Explore
Sources
Mentioned
- River Song
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.