Thunderlord's Decree should be changed...

"Who?"

if youre using TL on Sol... you clearly arent playing properly

TL can hit only 1 person every 15 seconds at level 18

Sol is built around being a mid / back line AOE damage dealer who accels at teamfights, but has a dead zone in his face where without ult people smoke you.

Deathfire is by FAR the most superior keystone on sol because his passive will proc the active on everyone hit in teamfights.

Hes not burst based ( some argue this because his Q / ult combo can hit hard ) but he has such a downtime between there that TL is highly ineffective

Sol is not a dive hard, kill fast champ which is who benefits more from TL or people who can constantly proc it with heavy hits

Sol is a sit back, position properly, and do the most damage to the most people for as long as you can