Summoning: Rashōmon

This summons forth a gate that is capable of blocking almost any attack; according to Sakon and Ukon, this was the ultimate defence developed by Orochimaru, and the fact that Kiba and Akamaru managed to dent it was impressive. It was believed that two people were required to summon it, as both Sakon and Ukon did; however, Orochimaru was able to summon three of these gates by himself with his Summoning: Triple Rashōmon. To do so, he simply used both hands, instead of one as is common in a summoning.

Trivia

 * This summoning appears to resemble a more demonic depiction of the main gate of old Kyōto.