Alright i recently discovered this combo and it could change crusadia's first turn plays for the better. What you need: 1 crusadia, 1 "special-summoner" (another crusadia, WL Crown, Mekk-Knights, Instant Fusion etc.) and of course Waterfront.
Since the first two are pretty much a given in any crusadia deck, Waterfront is the weak point. If you play the rose garden variant you can increase the consistency by playing Teraforming and Set Rotation, since you play 3 fieldspells then not a bad addition anyways.
Here's what you do:
Activate Waterfront
NS any crusadia (preferably not Draco
Link up into Magius and SS your second monster to search Draco
Link into Spatha
SS Draco under spatha, get your first monster back, shift draco to the side and SS your added monster.
Link into Skull Dread with your 3 monsters.
Search Gameciel with Waterfront and SS it with S.D.'s effect to an outer link zone (So Equimax can point to it on your next turn) You now have a live Gameciel with 3300 def and could extend your combos since SD still has 2 unoccupied link zones. Be careful with overextending though. Also keep in mind kaijus are in herently "kaiju proof" so there is no real way for your opponent to get rid of it. Actually Lava Golem seems to be the only out I can think of right now.
Why this combo is great: -For going first obviously -Individual combo pieces are not useless when drawn without the combo or when going second: You can still search a kajiu with waterfront and use it on your opponent, maybe just don't give them a disruption Kaiju since he could use it against you :) -The Skull Dread climb could also SS a rescue cat for mixup -When your opponent passes turn to you, search another kaiju if they have a monster, NS any crusadia and link SD into equimax to prettymuch instantly punch for game turn 3 after the stun
The downsides: Skull dread doesnt draw you cards with this combo and he takes up an esxtra deck space