Card skills

[squeaky]

How do i raise these skills do i have to spend money to do this or is this free i just need to know witch it is lol

[Ragnarok72]

Dont even bother unless u're doing Panzers. Only night maiden skill can be lvld up fast by feeding her snakes.. As far as I know the only 6* card which is easily doable...

[squeaky]

i have a dragon i was gonna raise skills on not sure what her stars are though

[pmsupport]

Hi squeaky, you can level up the skill of a card by strengthening it with cards possessing exactly the same skill (the skill name and description are exactly the same). One card with the same skill provides 15% chance to upgrade the skill. So the best way is to strengthen the target card using 6 cards possessing the same skill so as to boost the chance to 90%.

[Bigbadjohn]

Hi squeaky, you can level up the skill of a card by strengthening it with cards possessing exactly the same skill (the skill name and description are exactly the same). One card with the same skill provides 15% chance to upgrade the skill. So the best way is to strengthen the target card using 6 cards possessing the same skill so as to boost the chance to 90%.

I am not sure "best" is appropriate, "safest" may be a better term. The average outcome is exactly the same whether you do it in 1's or 6's - interestingly the biggest downer seems to be the failure when you do 6 (10%). Be chilled whatever the result but as an earlier post stated, panzer dragons for outcome and night maiden for ease (but little value) are the only two worth chasing.

[HernHunter]

I read what Bigbadjohn wrote and want to ask. What way is better to rise panzer dragon skills? Use 1 dragon with 15% chance many times or do it with 6 cards for 90%. Can anyone with experience in skill rise answer?

[Boop]

I personally use 6 when i skill up. But it's up to you and how much you feel like gambling.

[Midas]

Ok, we have next data:
Chance to level up - 15%
Number of tries - 6

Bernoulli theorem to the rescue!

1-(1-0.15)^6 = 1 - 0.85^6 = 1 - 0.377 = 0.623 = 62% that you level up skill after using 6 tries.
But here is the trick - we can raise level twice in this manner.

Formula here -
Chance of raising level twice in six tries = P(2|6)=C(2|6)*0.15^2*0.85^4=6*0.0225*0.522=0.07 = 7%
So chance of getting one or two level ups is 62+7 = 69%

You can calculate chances of getting three level ups and four and add them yourself.
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Summary: Use 6 cards to raise level of skill. It's safer and use less math)