[Meta thread] Iron's PokeRole Adventure: The Skull Ruins

[Dragonstrike]

Spoiler

If we only consider Level Up Moves and Breeding Moves, and not if a Pokemon can learn a Move via a TM, then by my count only Skarmory (learns Spikes naturally, can likely learn SR due to being Hazard centric like Forrestress/probably learn as a Surprise!) the Ferroseed Line (Learns Spikes naturally, hazard centric like Forrestress/Skarmory/learn as a Surprise!),  the Dweeble line (learns SR naturally, can learn Spike via breeding/probably as a Surprise!), and the Forrestress line can learn both SR and Spikes (+ Toxic Spikes, in Forr.'s case!). Omanyte could possibly learn both + Toxic Spikes if breeding and SR TM were allowed on it,  Shelmet, Venipeede, Trubbish and Frogkie line can learn both Spikes and Toxic Spike via their level and/or breedsets, Shuckle can learn Sticky Web and SR via breeding/TM, and Smergle can learn them all due to Sketch, just to name some other notable hazard combo users. 

All in all, their's a fairly limited amount of Pokemon that can utilize multiple hazard Moves , and that's only if Breeding Move and TM usage are allowed/given for them on a case by case basis. Therefore, I believe their's strong support for allowing different hazards to be stacked with each other (Not with themselves), since it takes either a rare/unique Pokemon capable of learning multiple Hazard Moves or a coordinated effort by 2 or more common Pokemon with different Hazard Moves to lay them in conjunction, and Multiple Actions stretched over time as a result.

And out of all of those, the ones that can get all of their hazards in that list without needing GM approval for moves not listed in the book are Forretress, Shuckle, Trubbish, Venipede, Greninja, Dwebble, and Ferrothorn (not including Smeargle for obvious reasons).

Basically, Shelmet, Omanyte, and Skarmory are the only ones out of all of those who lose out on their full hazard setting potential because not all of their hazards (if any) are listed in the book.

Side note: bonus points to Omanyte and Omastar for almost getting there by having both Spikes and T. Spikes listed, though.  Just missing SR as a listed move.  Ironically enough, Kabuto can get Stealth Rock, though.  Lolz.