Thunderbird is just too powerful even after nerfs

[Letbell]

Thunderbird has already receive 2 changes in patch 5.0.33 and 5.0.57, but the unit itself still manage to dominate wave 10 - 17 without any problems or issues. They're pretty tanky for a units that cost around 235 golds total, and can even beat wave 14-17 quite easily if stacking them out.

Things that really need to change on thunderbird

1) Faerie Luck really needed to be remove. This makes thunderbird so tanky even later level.
2) Reduce Aftershock DPS. This was the reason why TB was stack out against wave 14 and 17. They're so tanky with Faerie Luck already and this type of DPS can pretty much by-pass armour type even on later waves. I know it's magic, but it's completely replaced picking siege as a top priority against wave 17.
3) Reduce HP from 1220 to 1000 HP.
4) Increase total gold cost from 235g to 300g
5) Change heavy armour type to light armour type

For a tier 3 units that worth 235g in the current patch and manage to dominate wave 10-17 quite easily from just stacking it out is quite insane.