"Commander ninjutsu [cost]" means "[Cost], Reveal this card from your hand or from the command zone, Return an unblocked attacking creature you control to its owner's hand: Put this card onto the battlefield tapped and attacking." Commander ninjutsu is a variant of ninjutsu that can be activated from the command zone as well as from your hand
It might take longer to get going than the other 4, but once it does get going, it is certainly the one in the cycle that is the most imposing Adding a one mana kicker to all your stuff that lets you drain 1 life is a pretty useful thing
Here are the top sets you need to know about: Shiny Treasures (SV4a) Why You Need It: Packed with Shiny Pokmon, Character Rares, and special holo designs, this set is a favourite for collectors
Oh, and General Tazri - the go-to allies leader before Katara came along
In any sort of aggro deck, this will make it very hard for your opponent to defend in any way