Ancient Dragon, Spinodriver (RR)

[AUTO] Limit Break 4 (This ability is active if you have four or more damage):[Choose two of your «Tachikaze» rear-guards, and retire them] When a «Tachikaze» rides this unit, you may pay the cost. If you do, draw two cards, and choose your vanguard, and that unit gets [Power]+10000/[Critical]+1 until end of turn.
[AUTO](VC):When this unit attacks, if the number of rear-guards you have is more than your opponent's, this unit gets [Power]+2000 until end of that battle.
[CONT](VC/RC): Lord (If you have a unit without a same clan as this unit, this unit cannot attack)