Time for a classic.
Magen: Jubaku Satsu | Demonic Illusion: Tree Binding Death
Rank: B
Type: Supplementary
Range: Short
Chakra Cost: 20
Damage Points: N/A
Description: The user makes five handseals, and appears to dissolve into a mist. Once they stealthily approach the target and get within short-range, the opponent feels completely immobilized, and believes they have been bound by a fast-growing tree and are unable to move. The user then appears as if they emerge from the tree to attack the target. In reality, the target is immobilized, allowing the user to strike or interrogate them.
Preform the needed handseals.
Sensei shows them.
In this illusion you'll dissolve in a mist or haze. Suddenly, a tree is grow up around them trapping them and from that point you'll come from the tree and stab them. In reality, you'll move sneakily around and attack them from behind. Do you remember who used this technique and who it was used against? Why was it foiled by this shinobi?