Ancient Dragon, Spinodriver

:When this unit attacks from or is rode upon, [ 1 & retire two rear-guards], get an Imaginary Gift:Accel, draw a card, choose a card from your hand, and call it to . Then, choose two of your units, and they get +5000 until end of turn. :When your drive check reveals a trigger unit, put the top card of your deck face down as an equip gauge for this unit.