It's short range mainly because of the additional effect it has, which is paralysis. According to Scorps: "Genjutsu = Mental Paralysis (and thus, beyond the normal alteration of how you perceive the world and as such your inability to "think" or act accordingly is paralyzed, in some cases, access to chakra might be conditioned in addition to the normal access to movement)" This is actually quite "game-breaking" in a fight, so in order to help restrict it a bit, it was made short range. Given, the effects are also quite useful if you happen to be the user. Naturally, you'd use the normal ways to release yourself from a B-Rank, and with the paralysis, a body surge would do the trick. I'd assume that the flowers came from the ground directly beneath and paralyzed you. Sad part is, this jutsu is from a game I actually played (Naruto Shippuden: Kizuna Drive), which is on the PSP, but I don't remember much of it.
And you already posted the learned jutsu yourself, so...o_o'
This next move is a short to mid range jutsu. Keep that in mind as you are not going to be simply manipulating your opponent this time.
After you take over my clone's brain, begin tossing explosive tags at him, in a manner so that he is led that all of them are fluttering butterflies. In the process, while he is mesmerized, have him believe that he is sinking into the ground (thus, trapped within it), allowing you to toss a final explosive tag on his head.
Remember to time this jutsu, and when you believe you've thrown enough explosive tags, detonate them all with the Snake Handseal.
And you already posted the learned jutsu yourself, so...o_o'
This next move is a short to mid range jutsu. Keep that in mind as you are not going to be simply manipulating your opponent this time.
After you take over my clone's brain, begin tossing explosive tags at him, in a manner so that he is led that all of them are fluttering butterflies. In the process, while he is mesmerized, have him believe that he is sinking into the ground (thus, trapped within it), allowing you to toss a final explosive tag on his head.
Remember to time this jutsu, and when you believe you've thrown enough explosive tags, detonate them all with the Snake Handseal.