Thanks for the suggestions. It'l like, I don't really have a lot from the ixalan sets because I stopped buying many cards after the amonkhet block. So I guess maybe it's pointless to ask what should go in besides having a reference to go off of like some of the suggestions you made but i definitely could use some help knowing what is just trash in here.
If you have multiple copies of
greenbelt rampager and
longtusk cub, those 2 form a nice combo from
Rhonas's Monument, since you mentioned having cards from Amonkhet and before, but not so much from Ixalan forward. You can continually pump creatures with the monument, casting the elephant over and over while having the cub eat the energy to ensure the elephant always returns to hand. (The elephant can also crew a vehicle after it enters the battlefield but before it bounces.)
Narnam Renegade also pairs well with
greenbelt rampager.
I would second Mnemosyne's thought of going mono green, unless you wanna spend $20-40 on color fixing. Mnemosyne's recommendation on creatures is spot on as well -
merfolk branchwalker is deck thinning/scry and
ends up as an aggressive 2 drop or puts a free land in your hand (the benefit of monocolor is never worrying about mana issues, unless you miss a land drop).
Thrashing Brontodon is value just as a 3/4 creature, with the bonus of the
naturalize activated ability. Rhonas,
llanowar elves,
steel leaf champion,
verdurous gearhulk all excellent for mono green.
Resilient Khenra.
Monocolor also let's you play one or two
field of ruin / scavanger grounds, as well as play with the deserts from Amonkhet block.
Hashep Oasis can help get that last little bit of damage through and cycling lands are nice in a pinch.
Green instants I'd play or put in sideboard:
blossoming defense,
naturalize,
ancient animus /
pounce,
plummet,
heroic intervention.
Lifecrafter's bestiary is good sideboard against control, as is
wildest dreams.
Prowling Serpopard against control always gets a groan from opponent.