If you couldn't get a ton of damage form masteries tank builds would die off.
10*level +.3Abouns AD +.1 AP for three hits
0.90 - 13.99 (based on level) bonus physical damage on-hit against champions for a maximum damage of 7.2 - 111.92 (based on level). for auto attacking.
We did not have anywhere near this much damage form masteries in past season and it is proving to not be something Riot has been able to balance around in what 16 patches?
How good are the keystones compared to the final rank of past seasons masteries? Havoc offered only 3% increased damage. That is a grand total of 30 damage for every 1000 damage done. 112 is offered from fervor when maxed and it is passing havoc with only 3 stacks for auto attacks.
We get it riot. You want masteries to be more interesting and impactful but you over loaded the keystones that people actually take.
and scissors are your burst/assassins like
and your paper would be 