These combine reprinted Magic cards with new, oversized cards with new functionality

Abundant Growth Animal Boneyard Annex Barbed Field Blight Blighted Burgeoning Buried in the Garden Caribou Range Caustic Tar Chamber of Manipulation Chronic Flooding Conquer Consecrate Land Contaminated Ground Convincing Mirage Corrupted Zendikon Crackling Emergence Crusher Zendikon Cursed Land Dawn's Reflection Debtor's Pulpit Discreet Retreat Earthlore Elvish Guidance Equinox Erosion Evil Presence Farmstead Fertile Ground Find the Path Flowering Field Footfall Crater Forbidden Lore Friendly Neighborhood Genju of the Realm Gift of Paradise Glittering Frost Goblin Caves Goblin Shrine Grafted Growth Guardian Zendikon Harmonious Emergence Hostile Realm Hot Springs Kudzu Leafdrake Roost Lingering Mirage Lithoform Blight Living Terrain Lush Growth Market Festival Mystic Might New Horizons Nissa's Zendikon Noxious Field Nylea's Presence Orcish Mine Overgrowth Phantasmal Terrain Pooling Venom Psychic Venom Racecourse Fury Remarkable Readings Sea's Claim Security Blockade Sheltered Aerie Shimmerwilds Growth Skygames Spawning Grounds Spreading Seas Squirrel Nest Steam Vines

If I've got Elrond and Herd Baloth on the field and cast the Cryptic Annelid I showed you earlier, I'll pay four mana, scry 1, scry 2, scry 3 and end up with an additional 17 power on board in the form of three 4/4 beast tokens, a 1 power Cryptic Annelid and six +1/+1 counters
The Brothers' War did them again as monocolor cards
It's still a lot of extra power just for hitting land drops, which is a big deal in decks designed to get a bunch of extra lands into play
Time for another bit of technical Magic