The case with Tireless Provisioner is Peasant doesn't have ten-twelve fetchlands as Cubes with high rarity cards have.
Instead we have Evolving Wilds, Terramorphic Expanse (and bouncelands) and then ramp spells (creatures and spells que search for a land or two).
I've cut the 3-mana noncreature ramp spells (Cultivate, Kodama's Reach) and I'm playing more 2-cmc enchant-land cards, so landfall is not so easy for me, but I'm gonna try Provisioner, just because I have a slot for it. If the experiment goes bad, she will be replaced.
I did some drafts with Fast // Furious and was very decent. I play it on a Boros Burn deck for the draw mode. Nice option. And I even casted the wrath mode against an abzan midrange deck to clean the board. That day I won 3-0 and the card was always good.
I mean, you are adding combo potential to the Cube, but forgot that. What I want to know: is Ivy Lane Denizen a good card to run being there Renata? Is it worth to have both for the +1+1 counters archetype, or you would play with only one of them?
I'm not gonna include that archetype in my Cube, but due to buying this common and uncommon cards is usually cheap, at least in Europe, I like to acquire many cards just in case some day I build a new Cube or rebuild some archetypes.
Here are my thoughts about R/G Storm cards:
Empty the Warrens
First Day of Class
Fires of Yavimaya
Scurry Oak looks sweet. Good in a vacuum and great in a +1/+1 counter deck. I'm glad to have another card to make that deck more viable but I'm not currently pushing it. Not sure how to compare it to the always underrated Crocanura.