Cheapest priced copy (March of the Machine: The Aftermath): $0.35 at Card Kingdom, near mint, their price list as of .
Blot Out 
Instant · Uncommon · March of the Machine: The Aftermath · #12
Target opponent exiles a creature or planeswalker they control with the greatest mana value among creatures and planeswalkers they control.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
5 printings · $0.35 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| March of the Machine: The Aftermath | 12 | Uncommon | $0.35 | $0.49 |
| March of the Machine: The Aftermath | 62 | Uncommon | $0.35 | $0.49 |
| March of the Machine: The Aftermath | 112 | Uncommon | — | — |
| March of the Machine: The Aftermath | 196 | Uncommon | — | $0.79 |
| The List | MAT-12 | Uncommon | $0.35 | — |
3 rulings from Wizards of the Coast
- 12 May 2023Blot Out targets only the opponent, not any permanent. A permanent with hexproof may be exiled this way if its mana value is the greatest, for example.
- 12 May 2023Consider all creatures and planeswalkers the target opponent controls as one group to see which one has the greatest mana value. For example, if the opponent controls a creature with mana value 3 and a planeswalker with mana value 5, they must exile the planeswalker.
- 12 May 2023Which creature or planeswalker will be exiled is determined as Blot Out resolves.