Roaring Bullet of Dust Storm, Roanoad

[AUTO]:When this unit is rode upon by a grade 3 card with "Eugene" in its card name, [COST][Energy-Blast 3], draw two cards, choose a card from your hand, and put it into soul. [AUTO](VC/RC):When this unit attacks, if your opponent has two or less rear-guards, this unit gets [Power] +5000 until end of that battle.