Is there anyone who takes Thunderlord's Decree?

Compared to all the other masteries, even competing keystones, Thunderlord's decree seems somewhat lacking.

If you're a mage, Deathfire Touch is nearly directly better (with the only slight downside being that it will do 10/level damage less if you only have one damaging spell and its AoE, and have no ap, and I have no idea what champion with that kit would be in the cunning tree), and is directly better if you build more than 10 AP per level. This would still probably be true for mages even if it had no cooldown, since it activates on three abilities/attacks and any mage/assassin who used three abilities would get more damage out of DFT, and this offers only damage.

Windspeaker's is obviously better for a passive support, and Stormraider's is obviously better for assassins and bursty characters since most of them shouldn't need what is essentially a downgraded luden's echo passive on a longer cooldown, but should need to not stick around after they nuke someone's face. This includes autoattackers too, since any one of them that would benefit from extra burst would benefit more from extra mobility.

Any tank who would appreciate the level-scaling damage won't be 18 into cunning.

Especially compared to how powerful other keystones are (Warlord's, DFT, Bond), it's odd to me that there's a keystone which is not only a worse version of DFT, but also has pretty much nobody who would viably take it.