As we all know, th9 gives rise to numerous new attack strategies due to several new troops, spells as well as big jumps in stats for a few troops.

So the purpose for which I wanted to make this thread is to do compilation of the different strategies that are available, their pros, base types to use it on, minimum royals or troop levels needed etc, so as to provide a unified guide for people to discover new strategies as well as tips for the current and popular ones.

You don't need to provide a comprehensive guide on how to implement the strategy but a general abstract would be enough.