User blog comment:RainEStar/A New Clan Idea/@comment-25077685-20160511013554/@comment-25077685-20160511131336

[AUTO](Soul):[0] When your vanguard is attacked, you may pay the cost. If you do, choose one of your vanguards, that unit gets [Power]+1000 until the end of that battle, choose all of this unit's [AUTO], and they are lost until the end of turn.

Something like that?