Good cards: Flame 100 or less than 100200.

Best card: flame above 200. Note that, for example, chocolate bread, octopus and spinning coffee watering can all have +50 flames.

+6: 1 4-star card +2 3-star cards +3-grade grass, the success rate is 78%. Recommended insurance: 2 4-star premium cards, 1 5-star premium card, +3 grade grass, the success rate is over 90%. This is safe. But it's wasteful.

+7, 3 6-star premium cards, +3 grasses. The success rate is 90%. This is a waste. You can do this: 3 5-star cards +3-level four-leaf clover, and the success rate is 74%.

By the way, say +8.

+8: 3 6-star advanced cards, +4-level grass+protector, success 70. Not insured, suggest 1 7-star premium card +2 6-star premium cards, 4-level grass, protector. Success 79.