Locket of Yesterdays
Artifact
Spells you cast cost 
less to cast for each card with the same name as that spell in your graveyard.
- CMC
- 1
- Mana cost
- Color identity
- C
- Rarity
- uncommon
- Set
- Time Spiral
- Price
- $2.94
- EDHREC rank
- #7480
Locket of Yesterdays reduces the mana cost of spells you cast by one for each card with the same name in your graveyard — in the right deck, that discount compounds fast. The payoff is real but narrow: outside of commanders like Katilda and Lier that deliberately stack the yard with redundant copies, it sits in your hand doing nothing.
Best Commanders
Commanders with the highest synergy
Katilda and Lier
Katilda and Lier mills cards and casts spells from the graveyard, so Locket of Yesterdays turns every duplicate spell already binned into a live mana reduction on the next copy you cast. It's the tightest fit on this list — the discount is often two or more mana by mid-game.
Aeve, Progenitor Ooze
Aeve, Progenitor Ooze is its own storm trigger, and every previous storm copy that resolves and dies seeds the graveyard with identical Oozes. Locket of Yesterdays converts that graveyard count directly into a cheaper commander cast on the next storm chain.
Galazeth Prismari
Galazeth Prismari builds around artifacts and instants or sorceries with high repetition, and Locket of Yesterdays pairs with the artifact theme since it is itself an artifact that taps for mana. The synergy is looser here — you are leaning on spell redundancy rather than any one dedicated engine.
Niv-Mizzet, Visionary
Niv-Mizzet, Visionary draws cards whenever you cast a multicolor spell, and decks built around him tend to run multiple copies of the same cheap cantrips and interaction. Locket of Yesterdays rewards that repetition with incremental discounts, though the effect rarely snowballs as hard as it does in graveyard-first builds.
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 | not legal |
| oathbreaker | legal |
Locket of Yesterdays is legal in Commander, Legacy, Modern, Vintage, and Oathbreaker, but competitive play in Legacy, Modern, and Vintage has never touched it — those formats demand immediate, unconditional impact, and a discount that requires graveyard setup is too slow. In Commander it finds its niche: the longer game and singleton rule create exactly the conditions where multiple copies of a card pile up in the yard naturally, especially in storm, flashback, or self-mill builds. Oathbreaker is a smaller pool, but the same graveyard-synergy commanders that want it in Commander want it there too.
Key Combos
Combo lines featuring this card
Price Context
Current price
$2.94 cheap tier
At $2.94, Locket of Yesterdays sits at the low end of the cheap tier — a negligible buy-in for any deck where it genuinely belongs. It is a narrow enough card that demand will stay limited, so the price is unlikely to move meaningfully in either direction.
Explore
Sources
Mentioned
- Katilda and Lier
- Aeve, Progenitor Ooze
- Galazeth Prismari
- Niv-Mizzet, Visionary
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.