The Omen Hawker lists felt much more powerful with an Omen Hawker in play than without, so Rule of 8 here will be huge
Now, this is really important: you cannot evolve a Pokemon that you just played to your bench
It's kind of build your own black one drop, which isn't that good, but, whatever
It's relatively straightforward as a strategy too: start with Hitmontop and use the cheap energy costs to start an immediately aggressive play, using the Rocky Helmets to dissuade opponents from attacking you back
Adrestia's second ability will trigger as long as it was crewed by an Assassin this turn, even if that creature has left the battlefield or stopped being an Assassin since
Whether you prefer the calculated synergy of Sapphire & Emerald or the daring aggression of Ruby & Amber, theres something here to match your playstyle