Did you mean creature, or did you mean ALL spells? If it's the latter, this is absurdly good. It's like a Leyline of Anticipation without the traditional Leyline problem.
Even if it's just creatures, this still probably needs to have a mana cost.
This is not meant to be limited to creature spells (or any other spell type), since Venser's creature and planeswalker cards are not focused on one type like Garruk's. Please note that only the first spell you cast each turn can be cast with flash, unlike Anticipation which gives all spells you control flash (or, more accurately, they behave as if they have flash for the purposes of being cast).
If this is meant to be a cycle - as I notice two Helms being posted already - this should probably get merged.
Also, the implications of both of them are too much color pie destruction for my taste. It's one thing to pack four Leylines in an off-color deck; that's four cards you can never cast and will always be terrible draws. Making these cost 0 makes the access way too high - you're telling me that it's okay for every deck in Magic to have a means of giving their first spells of each turn Flash? Every color, every archetype only has to draw this, at some point, to make it so? I think that's bad. It's okay for artifacts to enable 'off-color' things, but generally I don't think this kind of effect should be free to everyone.
I don't have ideas for a cycle, although the two posted are clearly related. The card text I wanted first and I added flavor around them. I tried to imagine a conversation between the two walkers, who share little in common except that they both wear helms. I can see why giving mono-green stompy decks free flashes would be stretching the color pie too far.
Considering how much lower the power level on this is relative to Orrery I've recosted it a bit above

. Note a slight change in wording as well as I took another look at Leyline of Anticipation/ Vedalken Orrery.