Identify the Core Set 2021 Common Instant Rookie Mistake by card number 66 and its {U} mana cost.
2020 • Magic: The Gathering • Core Set 2021
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| Condition | Value | Source | Trend | Price Details |
|---|---|---|---|---|
$0.06 | Guide Estimate | +20% | ||
Raw / Ungraded
TCGplayer Market (reference) · Guide Estimate evidence · captured Nov 5, 2026
Rookie Mistake is an Instant card from the Magic: The Gathering Core Set 2021, designated as card number 66 in the M21 set code. This Common rarity card requires {U} mana to cast. The artwork is by Zoltan Boros. The card has a mana value of 1 and a color identity of U.
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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
{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
The mana cost for Rookie Mistake is {U}, representing one blue mana. This gives it a mana value of 1 in the game.
Zoltan Boros is the artist credited with the illustration for Rookie Mistake in the Core Set 2021 expansion.
Rookie Mistake is printed with Common rarity in the Core Set 2021 set.
Explore cards with this name across sets and editions. Check each card’s details before choosing a version.
