A new trailer for upcoming Wii U RPG Genei Ibun Roku #FE features the game's Extra Skills system. Extra Skills are flashy abilities that party members can use in addition to their usual command skills. The three types shown in in the video, featured below, are called Ad-Lib Performances, Special Performances, and Duo Arts.
An Ad-Lib Performance skill is an enhanced version of a regular command skill, causing more damage, and having a wider range and additional effects. These abilities may trigger when a command skill is used. Special Performances are powerful skills that unleash the power of the character's Mirage partner and use SP as opposed to EP. These skills can turn the battle around when in crisis. Duo Arts are unique combination attacks between two party members. After one is performed, a session attack may be triggered, allowing the other party members to follow up with their own attacks. An example of an Ad-Lib performance starts at 0:20, a Special Performance at 0:35, and a Duo Art at 1:13.
Genei Ibun Roku #FE is a unique crossover between Fire Emblem and Megami Tensei. It will launch in Japan later this week, on December 26. It is slated for release in North America and Europe sometime in 2016.