Plus, things like Eldrazi Temple, Urza's Mine, Urza's Power Plant, and Urza's Tower for even more top-end and explosivness
Here are some proxy sites worth checking out if you plan on buying proxies: You could also try your hand at eBay, Etsy, or even Reddit to find printers
Thats not the case
For removal, run creatures aswell, id get Foundation Breaker, Druid of Purification, Bane of Progress, Haywire Mite, Reclamation Sage, Voracious Hydra, Acidic Slime, Duplicant, Kogla, the Titan Ape, Meteor Golem, Terastodon, Woodfall Primus, Ulvenwald Tracker For draw, run creatures aswell (your starting to see a synergie?) Beast Whisperer, Voice of Many, Toski, Bearer of Secrets, Augur of Autumn for ramp you have the mana dorks, Sakura-Tribe Elder, Fertilid, Wood Elves Elvish Pioneer, Primeval Herald, Skyshroud Ranger, Selvala, Heart of the Wilds For bombs, id run creatures that already have trample, Defiler of Vigor, Neverwinter Hydra, Ochre Jelly, Kalonian Hydra, Aberrant, Craterhoof Behemoth and a tutor: Fierce Empath some other cards i would consider Champion of Lambholt (makes your creatures unblockable, Saryth, the Viper's Fang hexproof untapped, deathtouch when attacking (insanely powerfull with big trample creature)

This sounds insane at first but can basically be attributed to certain Limited formats having strange rares that greatly reward playing absurd amounts of land
In that case, Copy Land simply enters the battlefield as an enchantment with an irrelevant ability