as promised here is my dimensional gb deck used against the vayu turbo on saturday tournament.

MONSTER (12):
GB laquari x 2
GB darius
GB equeste x 2
GB hiplomus
GB murmillo
GB bestiari
kycoo x 2
test tiger
morphing jar

MAGIC (15):
giant trunade
brain control
heavy storm
MST
BOM x 3
Gladiator's proving ground x 3
shrink x 2
dimensional fissure x 3

TRAP (13):
GB chariot x 2
trap dustshoot
mirror force
torrential tribute
solemn
dark bribe
trap stun
bottomless x 2
waboku x 3

SIDE DECK (15):
Light imprisoning mirror x 3
Dark imprisoning mirror x 3
Mirror of oaths x 3
smashing ground x 1
shrink x 1
dust tornado x 1
raioh x 1
ancient forest x 2

i don't have dimensional prison, hence i replace it with shrink. the point of playing GB in my opinion is that,get ride of opponent's monster as much as you can,best is if you could remove them from play.hence the need for D.prison. the second point is that,in order to play GB well,let them battle as much as possible!if not they will not be called gladiator beast...LOL!