The Magic: The Gathering Core Set 2021 card Rookie Mistake (#66) is a common instant with a foil finish, featuring artwork by Zoltan Boros.
2020 • Magic: The Gathering • Core Set 2021
No listings available right now.
| Condition | Value | Source | Trend | Price Details |
|---|---|---|---|---|
$0.35 | Guide Estimate | 0% | ||
Raw / Ungraded
TCGplayer Market (reference) · Guide Estimate evidence · captured Nov 1, 2026
The Magic: The Gathering Core Set 2021 card Rookie Mistake is identified by the set code M21 and card number 66. This Common instant card features a foil finish and artwork by Zoltan Boros. The card has a mana cost of {U} and a mana value of 1. Its rules text reads: "Until end of turn, target creature gets +0/+2 and another target creature gets -2/-0." The flavor text for this card is "Stop locking your knees as you strike! Now stand up and try again."
We'll pre-fill the product details from this catalog entry, so your listing lands on this exact page. Just add photos of your copy, pick its condition, and set your price.
The catalog profile below summarizes the card identity, featured subject, and notable collectible traits.
The core identity of the card within the set.
The subject, team, league, and sport context tied to this card.
Featured
Rookie Mistake
Game
Magic: The Gathering
Rarity, print treatment, and game-specific stats for this card.
Common
Zoltan Boros
Card Stock
English
Foil
{U}
Instant
U
Abilities, attacks, oracle text, and flavor text printed on the card.
Until end of turn, target creature gets +0/+2 and another target creature gets -2/-0.
"Stop locking your knees as you strike! Now stand up and try again."
FAQ
Rookie Mistake has a mana cost of {U} and a mana value of 1.
The artwork for Rookie Mistake was created by Zoltan Boros.
Rookie Mistake is from the Magic: The Gathering Core Set 2021, with the set code M21.
Explore cards with this name across sets and editions. Check each card’s details before choosing a version.