Youre looking to maximize the effectiveness of your red spells
Seeing as Tidebinder doesn't actually counter Atraxa, it's the only card that answers her enter the battlefield trigger while still getting around Cavern of Souls.
Sure, you can get two creatures out of the way for two attacks and two blocks, but if you dont have the game in-hand by the time they untap, youre going to be in trouble
Many token strategies prefer to use a token decks sheer numbers as fuel for powerful card effects to either to kill opponents outright, bleed them out as they try to preemptively deal with the growing swarm, or as cogs in a combo engine
Scrounger effectively has flash more often than not
Here's a breakdown of what we know about each of the decks so far, along with some analysis of what each of the five colleges stands for