Thunderlord's Decree Balance Change

So when you queue up for a game and see 5 thunderlords on the same team that means Riot will 100% for sure nerf the keystone, most likely next patch.

Suggested change would be something like decrease the base damage to 5 per level from 10 per level and the cooldown to 8 seconds from 20 seconds; so the effect can happen more frequently, but less bursty when it does happen. Basically it tones back the keystone without destroying it and make the others more tempting to take again.