Instead of Three Hits, Make Thunderlord's Decree Trigger In Four

For simplicity, I'll keep this extremely short:

• Thunderlord's Decree has no downsides:

• The vast majority of Keystones have a sort of niche that they're intended to work alongside but Thunderlord's works universally without fail (there's a reason it dominates, even after Precision nerfs)

• It's far too easy to proc:

• League as a whole is a three-hit combo kind of game, making Thunderlord's an afterthought to most players.

• Four hits instead of three:

• This would leave the relative power of the Keystone intact but make players who want to capitalize on the extra burst have to invest just a little bit more into it to get it. This also makes other Keystones more enticing and would help to bring about mastery diversity to season six.