Budget Gruul Landfall

probably up to 20 bucks, looking to keep this one pretty cheap, I might add avenger of zendikar

Ok, First thing I want to point out is that you seem to have two different landfall things going here:

1) Temporary pump:
Plated Geopede; Snapping Gnarlid; Baloth Woodcrasher; and Grove Rumbler, of which the first 2 are aggressive, while the latter two or more midrang-y.

2) Extra Value:
Rampaging Baloths is the only one in the deck in this category, but you did just mentioned Avenger of Zendikar, which is another.

I suggest choosing one mode or another, but not both. Once you've made your choice, I can give you my ideas, including what I consider to be more efficient landfall trigger / land search cards.

Can you give my landfall deck a look too?
http://www.mtgvault.com/massivefat/decks/2-landfall/
I feel like there is a whole in it, but I don't know what it is, maybe change the "Baloth Woodcrasher" for "Mina and Denn, Wildborn" or "Turntimber Basilisk", I really don't know
I haven't bought this deck yet, just gonna be able to do so next month, so... never tested it actually =/
Help appreciated =D

I'd probably go for pump landfall overall

Took me a while to check the prices. All the following should cost between $0.10 and $1.50 per card.

We have 2 pump options, with a few overlapping cards.

1) Agressive, low cost:
These are the cheapest (mana wise) creatures that get pumped via landfall with low cost landfall triggers.

The Creatures:
> Scythe Leopard: Lowest mana cost, but only gets +1/+1 from landfall.
> Plated Geopede: Best cost to effect ratio among the low mana landfall creatures.
> Makindi Sliderunner: Trample is this one's strongest effect.
> Snapping Gnarlid: Decent base stats for its cost.
> Vinelasher Kudzu: +1/+1 counters is what makes this good.
> Valakut Predator: Worse version of Plated Geopede, but +2/+2 is nothing to scoff at.
> Sylvan Advocate: While not a landfall creature, 2 for a 4/5 with vigilance is good.
> Undergrowth Champion: Ab upgrade to Vinelasher Kudzu.

The Landfall Triggers:
> Rampant Growth: Classic land ramp.
> Sakura-Tribe Elder: Rampant Growth on legs. Lets you ramp whenever you want.
> Evolving Wilds / Terramorphic Expanse: Cheap fetch lands that can trigger landfall twice in one turn.
> Firewild Borderpost / Gruul Turf: Bounces a land to hand, allowing you to replay it to get another trigger.

Utility:
> Retreat to Kazandu: Free +1/+1 counters for your creatures.
> Ground Swell / Swell of Growth: Landfall appropriate pump spells.
> Adventuring Gear: Additional +2/+2 per landfall on equipped creature.
> Skarrg, the Rage Pits: Poor man's Kessig Wolf Run. Trample is important.
> Teetering Peaks: Additional +2/+0 on top of a landfall trigger.

2) Big and Beefy:
Significantly slower than the aggro above, but packs a larger punch.

Creatures:
> Undergrowth Champion: The midrange idea can pull out more lands at once, making this a sizable threat for its cost.
> Embodiment of Fury / Embodiment of Insight: While these don't get bigger from landfall, they do allow you to go wide. Works well with Sylvan Advocate.
> Grove Rumbler: Arguably the best landfall creature at this cmc. The trample is very important.
> Baloth Woodcrasher: Grove Rumbler's big brother?
> Woodborn Behemoth: 5 for an 8/8 trampler (most of the time)
> Oran-Rief Hydra: +1/+1 counters is more powerful than temporary +1/+1, especially when doubled on half the lands entering.
You might want to include some of the smaller creatures, like Sylvan Advocate and Sakura-Tribe Elder, to act as blockers while you set up for the bigger creatures.

The Landfall Triggers:
While aggro above wants cheap search, you can use the same search here, and the following.
> Search for Tomorrow: Can suspend on turn 1, and puts the land in untapped. One of my personal favourite land search spells.
> Explosive Vegetation / Ranger's Path: Midrange can afford these multiple land search options.
> Nissa's Renewal: As this version is slightly slower, the 7 life gain is important.

Utility:
Mostly the same as for Aggro, but also consider:
> Pulse of Murasa: Returns any important creature to hand, or returns a fetch land, allowing for 2 more landfall triggers. The 6 life is also relevant.
> Zendikar's Roil: Extra blockers while ramping up your big creatures. Also an alternative win condition.

In a way you guys also helped me... some of those cards I didn't find while I was searching, others I knew but didn't remember and others I didn't know about them so thank you =D

alright cool, thanks for the suggestions, I'll see what I can do with em