The Brothers' War

Rescue Retriever

Rescue Retriever {3}{W}{W}

Creature - Dog Soldier
Flash
When this creature enters, put a +1/+1 counter on each other Soldier you control.
Prevent all damage that would be dealt to other attacking Soldiers you control.
3/3
Geology Enthusiast

Geology Enthusiast {3}{U}{U}

Creature - Human Artificer
At the beginning of your end step, create a tapped Powerstone token.
{6}: Draw a card and put a +1/+1 counter on this creature.
2/5
Terror Ballista

Terror Ballista {7}

Artifact Creature - Construct
Menace
Whenever this creature attacks, you may sacrifice another creature. When you do, destroy target creature an opponent controls.
Unearth {3}{B}{B}
5/3
Artificer's Dragon

Artificer's Dragon {6}

Artifact Creature - Dragon
Flying
{R}: Artifact creatures you control get +1/+0 until end of turn.
Unearth {3}{R}{R}
4/4
Woodcaller Automaton

Woodcaller Automaton {10}

Artifact Creature - Construct
Prototype {2}{G}{G} — 3/3
When this creature enters, if you cast it, untap target land you control. It becomes a Treefolk creature with haste and base power and toughness equal to this creature's power and toughness. It's still a land.
8/8
Mishra's Foundry

Mishra's Foundry

Land
{T}: Add {C}.
{2}: This land becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land.
{1}, {T}: Target attacking Assembly-Worker gets +2/+2 until end of turn.
Related card: Foundry Groundbreaker
Queen Kayla bin-Kroog

Queen Kayla bin-Kroog {1}{R}{W}

Legendary Creature - Human Noble
{4}, {T}: Discard all the cards in your hand, then draw that many cards. You may choose an artifact or creature card with mana value 1 you discarded this way, then do the same for artifact or creature cards with mana values 2 and 3. Return those cards to the battlefield. Activate only as a sorcery.
2/3
Lay Down Arms

Lay Down Arms {W}

Sorcery
Exile target creature with mana value less than or equal to the number of Plains you control. Its controller gains 3 life.
She'll swing a blade all her life, but never again for war.
Flow of Knowledge

Flow of Knowledge {4}{U}

Instant
Draw a card for each Island you control, then discard two cards.
"Focus your mind. Do you hold a piece of the ocean or a thousand drops of rain?"
—Hurkyl
Corrupt

Corrupt {5}{B}

Sorcery
Corrupt deals damage to any target equal to the number of Swamps you control. You gain life equal to the damage dealt this way.
"Most wise, most thoughtful, most powerful qadir," said the Gixian, "we offer whatever help we may give in your illustrious name."
Sardian Cliffstomper

Sardian Cliffstomper {1}{R}

Creature - Minotaur Barbarian
As long as it's your turn and you control four or more Mountains, this creature gets +X/+0, where X is the number of Mountains you control.
When Urza betrayed the Sardian dwarves, they called upon the might of their neighbors for aid.
0/4
Blanchwood Armor

Blanchwood Armor {2}{G}

Enchantment - Aura
Enchant creature
Enchanted creature gets +1/+1 for each Forest you control.
Some armor is forged, some is forested.