Board Thread:Theories and Speculation/@comment-25122992-20170307224943/@comment-9782468-20170308043131

I think FTG's main drawback is its difficulty. Tobirama and Minato were masters so we got see people who could use it like nothing. But the Hokage Guard people could only manage it in conjuction with each other.

Shadow Clone for me. It's only a B-Rank technique (relatively low in terms of high level jutsu), and it has so many uses. Someone could just keep sending out a clone to fight and gaining knowledge, while retaining their chakra since their chakra is sent back upon dispersal of the clone