Are we sure it’s both of them, rather than just Parka, and they’re saying ‘look, combine it with Obake to transform into Ghost!’
Because Obake is part of a normal Best Match (with Magnet as MagGhost), and it’s just weird if they just release Magnet alone at a later date...

The source I got it from says it's both.
But my japanese is too low to confirm that.

Cross Z henshin and Ryuuga splitting his pants. ������ They pronounce it as Cross Z in the announcement.

https://youtu.be/VT66HJrcKa4

Just to show the Mahoutsukai half

What do you think that once Banjo's innocent and Build recognized as a hero, will they be treated as celebrities just like in Drive when Shinnosuke's identity is revealed to the public?

unlikely i have a feeling this season is going to be a series of events that keep hitting them and when they get knocked down they keep getting back up and fighting because thats what ive seen happen. each time they get some where something just kicks them hard and knocks them down they fight back harder

Kuuukykokujyou FullBottle Blaster: 50 CM long and 4 Fullbottles can be set. Price: 5800 yen
FullFull RabbitTank Bottle which has 2 modes, Rabbit Rabbit and Tank Tank when used with the Hazard Trigger. Price: 2700, 5000 when packed with the Hazard Trigger

Further cements that Ryuga is the best comic relief since Onari and Taiga.

Grease in show suit.
Text seems to say he is someone who will steal the new driver.

Actually if I may revise, it says he will take the phoenix bottle and robot bottle away from Build and his motive and identity is still a mystery and also he seems to be the Kamen Rider of Hokuto.