Force Spear Mutant Deity, Stun Beetle

(Released when both players' vanguards are grade 3 or greater!)-Stride Step-[Choose one or more cards with the sum of their grades being 3 or greater from your hand, and discard them] this card on your from face down. (This ability is active if you have two or more face up G units in total on your or G zone):[ 2 & Choose a face down card named "Force Spear Mutant Deity, Stun Beetle" from your G zone, and turn it face up] When this unit's attack hits a vanguard, you may pay the cost. If you do, all of your opponent's vanguards cannot during your opponent's next stand phase, and your opponent cannot normal ride during your opponent's next ride phase. (He or she can ride by card effects)