Learn Guide
Chapter 7

Playtesting with Purpose

How to practice efficiently — the difference between playing games and learning from them, testing frameworks, and what to track to improve.

Playtesting with Purpose

Playing games and testing are different activities. Playing is doing the thing. Testing is doing the thing while paying attention to why results happen. Purposeful playtesting is how good players become great ones.

Playing vs Testing

Just Playing

  • Queue into a game
  • Make decisions based on instinct
  • Win or lose
  • Queue into the next game
  • Repeat
This builds raw pattern recognition over time, but slowly. You're learning implicitly — absorbing without analyzing.

Testing

  • Choose what you want to learn from this set of games
  • Play with attention to specific decision points
  • Record observations (mental notes minimum, written notes better)
  • Analyze after each game: what decided it?
  • Adjust based on findings
  • Repeat with new focus
This builds understanding faster. You're learning explicitly — identifying and encoding what works and why.

Types of Practice

Goldfishing (Solo Setup Testing)

Play your deck alone. Draw opening hands, run through 2-3 turns of setup.
Good for:
  • Testing consistency (how often do you brick?)
  • Learning your deck's sequencing (what order to play things)
  • Evaluating new card inclusions (do they fit the engine?)
  • Getting reps between events when no testing partner is available
Not good for:
  • Evaluating interactive matchups
  • Practicing under pressure
  • Testing your response to disruption

Focused Matchup Testing

Play the same matchup 10+ times. Both players play optimally.
Good for:
  • Understanding a specific matchup deeply
  • Identifying which cards matter in that pairing
  • Finding tech cards that swing the matchup
  • Developing a game plan for that specific opponent
Protocol:
  1. Play 5 games
  2. Discuss with your testing partner: what decided each game?
  3. Play 5 more games incorporating your learnings
  4. Compare your first-5 results to your second-5 results

Free Play (Open Testing)

Play against varied opponents and archetypes without a specific focus.
Good for:
  • Simulating tournament conditions
  • Testing general decision-making
  • Finding weaknesses you didn't know you had
  • Building broad familiarity with the format
Not good for:
  • Deep matchup understanding (too few reps against any single deck)
  • Testing specific changes (too many variables)

Tournament Simulation

Play a set of best-of-one games (or best-of-three if applicable) against varied opponents with time pressure.
Good for:
  • Practicing time management
  • Testing mental stamina over many rounds
  • Evaluating your deck under realistic conditions
  • Building tournament-day confidence

What to Track

Recording your results transforms playing into data. At minimum, track:

Per-Game

  • Opponent's archetype (what did they play?)
  • Win/Loss
  • Key moment (one sentence: what decided the game?)
  • Opening hand quality (good/OK/brick)

Per-Session (After 5+ Games)

  • Win rate vs each archetype faced
  • Most common reason for losses (patterns emerge)
  • Cards that over-performed (surprised you with impact)
  • Cards that under-performed (never relevant)

Over Time (Weekly/Monthly)

  • Matchup spread evolution (are you getting better at specific matchups?)
  • Most common decision mistakes (what keeps costing you games?)
  • Deck changes and their effects (did that tech actually help?)

The Feedback Loop

Effective practice is a loop:
  1. Hypothesis — "I think adding Card X will improve the Archetype Y matchup"
  2. Test — Play 10 games with Card X against Archetype Y
  3. Measure — Did your win rate change? What happened differently?
  4. Decide — Keep Card X, cut it, or try something else?
  5. Repeat with the next hypothesis
Without the hypothesis and measurement steps, you're just playing. With them, you're testing.

Common Practice Mistakes

Not Enough Volume

Five games tells you almost nothing about a matchup. You need 15-20 minimum to distinguish signal from noise. Ten games is barely directional.

Only Testing Good Matchups

It feels great to play matchups you win. It feels bad to practice the ones you lose. But the losing matchups are where improvement has the highest value. Force yourself to test your weakest pairings.

Switching Too Many Variables

Changed three cards AND switched to a different attacker AND changed your Supporter lineup? You have no idea which change helped or hurt. Change one thing at a time. Test it. Then change the next thing.

Not Discussing Games

If you have a testing partner, talk through key decision points after each game. "Why did you play that card there instead of the other option?" These discussions surface reasoning that pure solo reflection misses.

Testing Only One Way

If you only test with your deck, you don't understand how your opponent thinks. Swap decks with your testing partner for a few games. Playing the other side reveals:
  • What they're afraid of (you'll feel the fear)
  • What disrupts their plan most
  • Which of your cards they never want to see

Quantity and Quality

Both matter, but at different stages:
When learning a new deck: Quantity first. Play 50 games just to learn the basics. Don't track results closely — you're building muscle memory.
When refining a known deck: Quality first. Each game should test something specific. Track results carefully. 20 purposeful games beats 100 unfocused ones.
Before a tournament: Mixture. Play enough focused matchup games to confirm your game plans, then play some free-play to simulate varied conditions.

The Improvement Mindset

Every loss is data. Every brick hand is data. Every misplay you catch is data. The players who improve fastest aren't the ones who never lose — they're the ones who extract the most learning from each loss.
Ask after every loss:
  • Was this a deck problem or a play problem?
  • If deck: what would I change?
  • If play: what should I have done differently?
  • Could I have won with different sequencing?
The answer isn't always "I misplayed." Sometimes the matchup is bad and you were going to lose regardless. Knowing the difference is important — don't over-correct after inevitable losses.