Shattered Landscape

{T}: Add {C}.
{T}, Sacrifice this land: Search your library for a basic Mountain, Plains, or Swamp card, put it onto the battlefield tapped, then shuffle.
Cycling {R}{W}{B} ({R}{W}{B}, Discard this card: Draw a card.)

Arid Mesa

{T}, Pay 1 life, Sacrifice this land: Search your library for a Mountain or Plains card, put it onto the battlefield, then shuffle.

Brasch Tactics - Penetration

Reinforce

Plains

Helldivers, Assemble

Democracy Space Station

Honored Heirloom

Service Technician

Defender of Our Dream

Bloodstained Mire

{T}, Pay 1 life, Sacrifice this land: Search your library for a Swamp or Mountain card, put it onto the battlefield, then shuffle.

Proof of Faultless Virture

Servants of Freedom

Helldiver Physics

Helldiver 

Savai Triome

({T}: Add {R}, {W}, or {B}.)
This land enters tapped.
Cycling {3} ({3}, Discard this card: Draw a card.)

Siege Breakers

Flexible Reinforcement Budget

Eagle 1. Goddess of Democracy

A-MG-43 Machine Gun Sentry

Python Commandos

Armed Resupply Pod

The Only Good Bug Is A Dead Bug!

Nomad Outpost

This land enters tapped.
{T}: Add {R}, {W}, or {B}.

Stims

Democratic Detonation

Hellpod Space Optimization

Creature tokens you control have haste.
Legendary creatures you control get +1/+0.
Whenever one or more creatures attack, you may pay {1}{R}. If you do, creatures attacking your opponents and/or planeswalkers they control get +1/+0 until end of turn.

Proof of the Whistleblower

Coretta Kelly, Strohmann News

Force of Law

Fellwar Stone

{T}: Add one mana of any color that a land an opponent controls could produce.

Resupply

Exotic Orchard

Control Group

Battlefield Forge

{T}: Add {C}.
{T}: Add {R} or {W}. This land deals 1 damage to you.

Hellbomb

Smoldering Marsh

({T}: Add {B} or {R}.)
This land enters tapped unless you control two or more basic lands.

Orbital Napalm Barrage

Coldsteel Heart

This artifact enters tapped.
As this artifact enters, choose a color.
{T}: Add one mana of the chosen color.

Sacred Foundry

({T}: Add {R} or {W}.)
As this land enters, you may pay 2 life. If you don't, it enters tapped.

Path of Ancestry

This land enters tapped.
{T}: Add one mana of any color in your commander's color identity. When that mana is spent to cast a creature spell that shares a creature type with your commander, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

EAT-17

General Brasch

How about a nice cup of liber-tea

Firebomb Hellpods

Whenever one or more Helldivers you control attack, create a 1/1 white Helldiver creature token that’s tapped and attacking.

Whenever a creature you control enters, this enchantment deals 1 damage to each opponent.

Helldivers, Defenders of Democracy

Godless Shrine

({T}: Add {W} or {B}.)
As this land enters, you may pay 2 life. If you don't, it enters tapped.

Battle For Super Earth

Phyrexian Tower

{T}: Add {C}.
{T}, Sacrifice a creature: Add {B}{B}.

Command Tower

{T}: Add one mana of any color in your commander's color identity.

Urban Legends

CQC-1 One True Flag

Cutting Edge

Democracy Officer

Clifftop Retreat

This land enters tapped unless you control a Mountain or a Plains.
{T}: Add {R} or {W}.

Planetary Defense Cannon

Sweet Liberty

Dust Devils

A/AC-8 Autocannon Sentry

Polar Patriots

Chemical Agents

CQC-9 Defoliation Tool

Light Of Eternal Liberty

Jackle 6

Freedom's Flame

Orbital Gas Strike

Pelican 1

Eagle Smoke Strike

FX-12 Shield Generator Relay

Orbital 380mm HE Barrage

Luxury Suite

This land enters tapped unless you have two or more opponents.
{T}: Add {B} or {R}.

Orbital Railcannon Strike

Damaged Hellbomb

Spectator Seating

This land enters tapped unless you have two or more opponents.
{T}: Add {R} or {W}.

Viper Commando 

Steeled Veterans

Whenever this creature attacks, create two 1/1 white Helldiver creature tokens that are tapped and attacking. Sacrifice it at the beginning of the next end step. 
Attacking tokens you control have deathtouch.

Mountain

Swamp

LIFT-850 Jump Pack

Masters of Ceremony

SOS Beacon

Battle For Malevelon Creek

Fallen Hero's Vengeance

Vault of Champions

This land enters tapped unless you have two or more opponents.
{T}: Add {W} or {B}.

The Battle of Oshaune

Powley Colle

Derek

Fetid Heath

{T}: Add {C}.
{W/B}, {T}: Add {W}{W}, {W}{B}, or {B}{B}.

The Battle Of Calypso

Super Earth

John Helldiver, Defender of Democracy

Brasch Tactics - ABTCS

Isolated Chapel

This land enters tapped unless you control a Plains or a Swamp.
{T}: Add {W} or {B}.

Truth Enforcers

Acceptable Casualties

First Strike
Sacrifice this creature: Creatures you control gain indestructible until end of turn. 

Marsh Flats

{T}, Pay 1 life, Sacrifice this land: Search your library for a Plains or Swamp card, put it onto the battlefield, then shuffle.

Gemstone Caverns

If this card is in your opening hand and you're not the starting player, you may begin the game with Gemstone Caverns on the battlefield with a luck counter on it. If you do, exile a card from your hand.
{T}: Add {C}. If Gemstone Caverns has a luck counter on it, instead add one mana of any color.