Keystone mastery uses

Ok first, thunderlord is not the best, idk why everyone in low elo says it is but it isn't at all (not saying its bad since its ok on every champ but only great on a few with a burst like ap and other assassins and burst mages.) Though these are the uses.

Bloodlust- great on people who crit a ton, i mean 15 % free lifesteal on champs if you are 100% crit, thats big, oh and lets not forget 20% speed boost. (op on trynd early game since you have a 30% chance to have 15% lifesteal in fights in the beginning, YAY! (btw im going to try furour on him to see how it works as well)

Furour- anyone who doesn't really crit too much or excell at dealing alot of damage in short duration and still fighting. Now many people say that this is a bad mastery and that is bullsh#t. Though here is the math, after 10 auto attacks if ranged you do an extra 55 damage +10x where x=each next autoattack where thunderlord only does like 14-20 damage at level 1 at a 30 sec cooldown

Deathfire- Basically use this if you are an ability poking person using ap or even ad (i haven't seen one good with ad but if you did good job)

Stormraider- Thunderlord- now i put these together since they both are good for bursty assassins, since even with thunderlord you don't seem to kill your adc target sometimes and then your like, well sh#t im dead now. So stormraider=less damage for ability to assassinate adc when their whole team is around them, and thunderlord is for one shoting easier, but when no one is around them (now leblanc will WILL USE thunderlord since she can still assassinate and run without storm

Windspeaker- If you heal for days, or really if you can't use anything else. i put soraka twice cause F@CKEN GIVE ARMOR AND MAGIC RESIT GLOBALY WITH YOU ULT WTF!!!!!!!!!!!!!!!!!!!!

Undying- if you have health or gain health over time

Ages- if your a champ whos abilities use health or just you want to be more tanky and your abilities and auto's don't fit the attack masteries. (like thunder, its one you can't go wrong but others will excel most of the time)

Stone- pealing, just thats it, pealing.

The only reason I made this is cause IM SICK OF PEOPLE SAYING THUNDERLORD IS THE BEST AND ITS THE ONLY THING YOU SHOULD USE. thunderlord on MF, thunderlord on teemo, thunderlord on any mother f#cken champion they can find. No NONONONONONONONO and then thunderlord on yi F#CK THIS. sorry for being that salty but it just ticks me off. Well i hope this helps you get better with your masteries