Would this work

[Rass]

 {Myr Landshaper} +  {Karn, Silver Golem} = destroying lands?

[Vyse]

 {Splinter}

[MisterJH]

Well they would become artifact creature but youd need a way to destroy them. {splinter} would be evil against a land with a lot of basics

[Double-O-Scotch]

No, they would die cause their cmc = 0 and therefore their power/toughness would be 0...Interesting....

[Vampyvyrus]

No, they would die cause their cmc = 0 and therefore their power/toughness would be 0...Interesting....

Lol this was my thought but I didn't want to blurt it out and look like an idiot and be wrong haha

[Double-O-Scotch]

Good eye! Great combo!

[MuggyWuggy]

 {Breath of Darigaaz}   {Jolrael, Empress of Beasts} if we aren't specific on formats
Throw a {dingus egg} in there too.
You could {earthquake} in modern

[Langku]

Nice combo. I love this kind of mechanic.

{mycosynth lattice} with {vandalblast} or {march of the machines} is also a fun way to melt away those pesky lands provided you have a {master of etherium} or something similar to protect your lands.

{Bloodmoon} is coming in modern masters and that in tandem with vandalblast could be a groovy way to deal with all the dual lands floating about these days.

[MuggyWuggy]

{blood moon} + {trait doctoring} + {flash fires} if we're gonna geek on land destro

[MuggyWuggy]

{blood moon} + {trait doctoring} + {flash fires} if we're gonna geek on land destro

That would only kill one land though.

Blood moon - turn all non basics to mountain - gates, duals, etc
Trait doctor mountain to plains
All non basics are now plains
Flashfire - destroy all plains

I fail to see how this destroys only one land?

[MisterJH]

OH! That is so awesome! I totally missedthat woah, nice man

[Langku]

{trait doctoringing}. Change the text of TARGET permanent.  It doesn't change the text of all permanents, nor does it have cipher.

I'm no judge but I'm going with muggy here. I think where you're getting confused is that we're targeting {blood moon} (a permanent) and changing its text to say plains instead of mountains.  You're right, {trait doctoring} can't target all those mountains. But it can change bloodmoon so that IT affects all the other permanents.

[MuggyWuggy]