Rookie Mistake
Core Set 2021
#66
Common
Non-foil
Traditional foil
EN
Released · Illustrated by Zoltan Boros
- Draft Boosters
Not in a preconstructed deck (collector booster or promo printing).
"Stop locking your knees as you strike! Now stand up and try again."
What is this worth
Non-foil
$0.06
Medium confidence
- Retail Card Kingdom $0.35 as of 2026-10-19
- Retail Cardmarket $0.11 as of 2026-10-21
- Retail Mana Pool $0.15 as of 2026-10-19
- Retail TCGplayer $0.06 as of 2026-10-21
Traditional foil
$0.35
Medium confidence
- Retail Card Kingdom $0.49 as of 2026-10-19
- Retail Cardmarket $0.11 as of 2026-10-21
- Retail Mana Pool $0.15 as of 2026-10-19
- Retail TCGplayer $0.35 as of 2026-10-21
A free account watches this card for you and tells you when the price moves.
- 25 collections, any mix
- Card scanning, 100 AI reads a day
- Up to 15 price alerts
- 90 days of value history
- 5 imports a day
- A trade list of 1,000 cards
- 30 contact requests a month
- Trade alerts
A watched card never leaves the plane unnoticed.
Price history
Foil
7 d
0.0%
30 d
+29.6%
Daily retail prices from 11 Sep 2026 to 21 Oct 2026, one point per day we recorded one.
Non-foil
7 d
0.0%
30 d
+20.0%
Daily retail prices from 11 Sep 2026 to 21 Oct 2026, one point per day we recorded one.
Oracle text
Until end of turn, target creature gets +0/+2 and another target creature gets -2/-0.
Legalities
Legal Not legal
Standard
Not legal
Pioneer
Legal
Modern
Legal
Legacy
Legal
Vintage
Legal
Pauper
Legal
Premodern
Not legal
Old School
Not legal
Future
Not legal
Commander
Legal
Duel Commander
Legal
Oathbreaker
Legal
Pauper Commander
Legal
PreDH
Not legal
Brawl
Legal
Standard Brawl
Not legal
Historic
Legal
Timeless
Legal
Alchemy
Not legal
Gladiator
Legal
Penny Dreadful
Legal
tlr
Legal
competitivebrawl
Legal
Identifiers and data
- Scryfall id
- b19de7a5-c291-405b-a2e6-8d3ac56e6570
- Oracle id
- e51680d1-3e6c-4d1b-9705-36f73d7328cf
- Illustration id
- 604dd2ac-4a01-4854-9b66-021043bd942e
- Card back id
- 0aeebaf5-8c7d-4636-9e82-8c27447861f7
- Multiverse ids
- 485389
- MTGO id
- 81359
- Arena id
- 71848
- TCGplayer id
- 215864
- Cardmarket id
- 472169
- MTGJSON uuid
- 515a5bd9-8c37-5d99-95d9-ad1fd18922d1
- Card Kingdom id
- 234230
- Cardsphere id
- 67833
- Set code
- M21
- Collector number
- 66
- Layout
- normal
- Frame
- 2015
- Border
- black
- Booster
- Yes
- Games
- arena, paper, mtgo
- Story spotlight
- No
- Reserved list
- No
- EDHREC rank
- 28532
