This is usually the concept art. It does not drop from enemies. You must achieve a cumulative combo of 1,000 hits in a single mission. Play Mission 10 (Valley of the End) with Naruto, spam Rasengan into the crowd, and do not stop attacking. The card unlocks automatically after the mission summary.

Naruto Shippuden Ultimate Ninja Impact Unlock All Cards Extra Quality Review

This is usually the concept art. It does not drop from enemies. You must achieve a cumulative combo of 1,000 hits in a single mission. Play Mission 10 (Valley of the End) with Naruto, spam Rasengan into the crowd, and do not stop attacking. The card unlocks automatically after the mission summary.