Supreme King Servant, Lightning Reseph

Supreme King Servant, Lightning Reseph
Card Effect)s)
 * Name: Supreme King Servant, Lightning Reseph
 * Card Type: Trigger Unit
 * Grade / Skill: Grade 0/Boost
 * Power: 4000
 * Critical: +1
 * Shield: 10000
 * Nation: Dragon Empire
 * Clan: Narukami
 * Race: Sylph
 * Trigger Effect: Critical Trigger
 * Card Flavor(s): I've got your back! I promise!
 * [AUTO](RC):[Put this unit into your soul] When your vanguard attacks, if you have a grade 3 or greater vanguard with "Supreme King" in its card name, you may pay the cost. If you do, draw a card, choose one of your vanguards, and it gets [Power]+5000 until end of that battle.