I think you should cast out the temples and start playing 6 or 8 tri-lands. Urborg is a nice idea too.

urborg will go in, the problem with replacing the temple, is that neither of the trilands gives both u and w. and 8 tri-lands seems wayyy to slow, this things already slow enough as is, and i'd hate to draw a etb tapped t3 or 4, when i should already be dropping rhinos.

Mardu midrange (kind of an aggressive deck) plays between 8 and 10 tap-lands, doing just fine :)You want to be able to play your spell. Even if it sometimes mean to play it one turn later, it is still better than waiting to top deck the right color. That's just my opinion though.

By the way what do you think of Commune with the Gods ? The problem with your deck is that it needs a Rhino to get going. Commune allows to dig for it early, filling your graveyard with stuff for Murderous Cut. Moreover it can hits Whip of Erebos. It also hits Banishing Light, which could be a potential target for Clever Impersonator.The point is too many cards do nothing without Rhino, like stubborn denial, Quickling, Mercurial pretender.. And Archetype of Imagination is a win more card in my opinion, since if you can keep a rhino on the battlefield for a few turns it should be plenty enough, having him making one or two babies each turn. Archetype does nothing alone, and will rarely be of any real use to the rhinos.

Just a bunch of ideas i'm throwing like that, hope it can somehow help.

I love those Rhinos!! What do you think about Ghostly Flicker? Bring two Rhinos right back in the face of the opponent! (I would refrain from pairing it with the usual combo Mnemonic Wall or Archaeomancer though).

DO YOU EVEN READ RHINO BRO?

Is this actually competitive?

If you have the budget, Hero's Downfall instead of Murderous Cut could be nice, especially since you're already running Urborg, Tomb of Yawgmoth.

Fuquan. it's standard. the reason Murderous Cut is over Hero's Downfall, is the fact that my graveyard is usualy full due to See the Unwritten. so i won't have to reserve mana most of the time.

TheAlexGnan, i would sure hope that your modern deck would win! this is a standard deck bro.

So, I don't know if anyone else has suggested it (honestly TL;DR) but have you toyed with the idea of using Athreos, God of Passage? Lets you Rhino even more or your opponent burn themselves for 3.

Does Supplant Form make sense? Or too expensive? Return rhino and make a copy then cast rhino again

eyo57 i guess it does make sense, i hadn't really looked into the frf cards.

Jeskai Barricade as an alternative for Quickling?

I think it's better since Jeskai Barricade's effect is optional

yes

Temur Sabertooth

I came her for the Siege Rhinos. BRUH

Supplant Form You like that Siege Rhino? HERE'S A COPY OF THAT SIEGE RHINO. The original will be right back, no worries.

+1, this is probably way out of your CMC range, but Clone Legion might work

I never updated it for dragons, so I'll take a look. Thanks!

need more siege rhinos