Deck Check Rating
Missing cards in your collection
Deck Check explained
Deck Check is a good way to quickly check if your deck has problems. It’s not perfect, and it can’t be since Clash Royale is a dynamic and sophisticated game. It also depends on skill. A pro with a bad deck can beat a bad player with a good deck. However, it should give you a good idea if your deck is good or not.
Defense Defensive potential
How well you should be able to defend enemy attacks with this deck. It is calculated by looking at your defensive cards and their synergy.
Attack Offensive potential
How strong your deck is on offense. It is calculated from the cards that are able to deal damage to your opponent's towers.
Versatility Deck versatility
How is the deck able to defend against various things (swarms, tanks, certain units)? Calculated by looking at the counters to all cards in your deck.
Synergy Deck synergy
Synergy of the deck cards. How well they work together, both on offense and defense. This is the most important rating.
Problems + Warnings
Important part of the deck rating. Decks can have a good rating but have a problem for that can make it unusable. You always need to look at it together.
Deck tips
Following recommendations are only guidelines on how to improve your deck. It may work fine as it is.
| Warning |
No way to deal with the opponent's pump!
When your opponent plays Elixir collector, you have to be able to react accordingly or you're letting him accumulate elixir and then use it against you. Consider adding one of these: 
|
Let's fix it! |
|---|---|---|
| Warning |
No medium or high-damage spell.
It is good to have one medium or high-damage spell in your deck. You can use it to finish opponent's tower or against units clumped together. Consider adding one of these:
|
Let's fix it! |
| Warning |
No way of punishing your opponent for spending elixir.
When your opponent plays high-cost unit (6 or more) in the back, you have to be able to punish him, preferably by attacking in other lane to not let him accumulate a big push. Consider adding one of these: 
|
Let's fix it! |
Advanced stuff
Defensive cards
Anti-air
Units that can attack air. It's good to have at least two of them.
Defensive buildings
Defensive buildings in your deck. Having one helps a lot in defense.
Missing
Investments
Buildings or units that can be played in the back to invest elixir and force the opponent to make the first move.
Offensive cards
Win conditions
Cards that are good in taking enemy towers. Good to have at least one.
Damage spells
Spells in your deck. Having at least one or two is recommended.
Pump responses
Cards that can be played as a response to opponent playing an Elixir collector.
Missing
Dropped at the bridge
Cards that can be dropped at the bridge, either as a chip damage or as a rush attack.
King Tower activation – careful!
Cards that can activate your opponent's king tower when pulled with tornado, placed incorrectly or just countered in a specific way.
Swarms & Bait
Bait cards
If you have multiple cards that are countered by the same spell, you can play one card to bait the spell, then you can safely play the other card(s).
Against air swarms
Spells and units that can counter air swarms.
Against ground swarms
Spells and units that can counter ground swarms.
Ladder info
Some cards can be both level-independent and weak/strong when under/overleveled. Example: A lower-level Ice Golem doesn't kill Skarmy, so it's 'Weak'. However, in other aspects such as tanking, it works perfectly fine on lower levels.
Level-independent
Cards that are good even on lower level. Their key stats are not influenced by the level too much and no key interactions are level-dependent.
Strong when overleveled
Cards that are particularly strong if you have them on higher level. Their key interactions with some cards are changed when they are level or two above the other card.
Weak when underleveled
Cards that are particularly weak if you have them on lower level. Their key interactions with some cards are changed when they are level or two below the other card.
Free-to-play score
For a quick orientation about how easy it is to level up the deck for free-to-play players. The more epics and legendaries it contains, the lower the score.
Good
Geek area
Deck cycle
Cards ordered by elixir
This allows you to see the elixir cost of the cards more easily.
Shortest cycle
Cheapest 4 cards in the deck to see the cycle potential.
10
Attack Synergies 1 5
Synergy means that these cards work well when played together. They complement each other to make the attacks or defenses more effective. Dimmed cards mean the synergy is not so effective.
Defense Synergies 0 9
Counters
Dimmed cards mean that the counters are only partially effective.
Counters to win conditions
Cards that can defend the main threats your opponent can play.
Counters to secondary win conditions
Despite not considered win conditions, these cards need to be defended as well.
Counters to defenses
How well your cards can counter all the possible defending cards of your opponent. (Only counters to dangerous defending units are listed.)
