On Thunderlord's Decree
Let me start by saying- please read the whole thing before you comment. Thanks :)
Anyway, I don't like Thunderlord's as it is right now. It's supposed to be the burst mastery, aka more damage because that's what burst mages WANT. More damage.
The only problem with a "more damage" mastery that's easily used is that now everyone has tons of damage and little reason to- well- NOT take decree. It boosts your laning phase, ESPECIALLY if you're a tank. Tanks like base damage and Thunderlord's provides it.
If Thunderlord's stays as it is at the moment, it will never be balanced. I think it should be balanced more around burst, like "dealing X% of an enemies max hp within X seconds does extra damage". This would prevent many tanks, marksmen, etc from using it, while champions like Veigar would still love it.
If you have any comments, tell me, because I'd love to hear what you guys have to say!