Strange Mask Exploding Flame

By having his fire and wind masks merge, with or without him, Kakuzu has them combine their fire and wind attacks to create an powerful blast of intense fire. Kakashi remarked that water alone wasn't enough to put it out. It took the effort of a wind combined water technique to fully counter it.

Trivia

 * While unnamed in the manga and anime, it was named in Naruto Shippūden: Ultimate Ninja Storm 2.
 * In Rock Lee's Springtime of Youth Full Power Ninja Chronicles, this technique is called.