A Good Thing
CMB1Mystery Booster Playtest Cards 2019/#86/2019Rare
Colour IDMV 6
Current paper retail
Card Kingdom$1.29
Cardmarket€1.43
ManaPool$0.78
TCGplayer$0.99
Buylist (dealers pay)
Card Kingdom$0.33
Paper retail history (USD)
3 providers
Latest $1.29High $1.29Low $0.69▲ 87.0%
Market and collecting
Market overview
$0.99TCGplayer, USD, retail, nonfoil
Latest observation: 2026-11-10
7d▲ 0.0%30d▲ 0.0%90d▲ 0.0%
90d high
$0.99
90d low
$0.99
Paper printings priced
2
Currently 2nd
Cheapest paper printing
$0.36
Mystery Booster Playtest Cards 2021
- Up 0.0% over the last 30 days on TCGplayer.
- Trading at or near its 90 day high of $0.99.
- This is the most expensive paper printing currently priced (2 priced in total).
Find this printing on eBayView on TCGplayerAffiliate. MTGPrices may earn from qualifying eBay and TCGplayer purchases.
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Compare printings (2 priced)
Gameplay and rules
Enchantment
Spells and abilities you control can't destroy, exile, target, or cause you to sacrifice A Good Thing.
At the beginning of your upkeep, double your life total. Then, if you have 1,000 or more life, you lose the game.
Keywords
Double
Card capabilities
Enchantment
Derived deterministically from card types, Oracle text and keywords. Not a strategic evaluation.
Format legality
Primary formats
Eternal formats
Digital formats
Rulings (1)
wotc12 Nov 2019
To double a player’s life total, that player gains as much life as needed so that their life total is twice the number it was before. If their life total was negative, that player loses as much life as needed so that their life total is twice as far below 0 as it was before. Other effects interact with this life gain or loss accordingly.
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Ranked by shared capabilities, colour identity, mana value and type. Never by strategic judgement.
About this card
A Good Thing
A Good Thing is an Enchantment, with mana cost {4}{W}{B} (mana value 6). Printed 2 times across MTG sets.
Format legality: Commander: not_legal, Modern: not_legal, Standard: not_legal, Pioneer: not_legal, Legacy: not_legal, Pauper: not_legal.
Current headline price on TCGplayer: $0.99 (up 0.0% over 30 days).
Frequently asked
A Good Thing FAQ
How much is A Good Thing worth?
The current TCGplayer USD retail price for A Good Thing is $0.99. It is up 0.0% over the last 30 days. Over 90 days it has ranged from $0.99 to $0.99.
What is the cheapest printing of A Good Thing?
The cheapest currently priced paper printing is from Mystery Booster Playtest Cards 2021 at $0.36 on TCGplayer.
What is the most expensive printing of A Good Thing?
The most expensive currently priced paper printing is from Mystery Booster Playtest Cards 2019 at $0.99 on TCGplayer.
How many printings of A Good Thing are there?
A Good Thing has been printed 2 times in English paper sets that MTGPrices tracks.
What set was A Good Thing first printed in?
The earliest English paper printing that MTGPrices tracks is from CMB1 #86, released 2019-11-07.
What is the newest printing of A Good Thing?
The most recent English paper printing that MTGPrices tracks is from CMB2 #86, released 2021-08-20.
Is A Good Thing legal in Commander?
A Good Thing is not currently legal in Commander per Scryfall's legality feed.
Is A Good Thing legal in Modern?
A Good Thing is not currently legal in Modern per Scryfall's legality feed.