Stone Catapult

{T}: Destroy target tapped nonblack creature. Activate only during your turn, before attackers are declared.

Veteran's Armaments

Equipped creature has "Whenever this creature attacks or blocks, it gets +1/+1 until end of turn for each attacking creature."
Whenever a Soldier creature enters the battlefield, you may attach Veteran's Armaments to it.
Equip {2}

Zhang He, Wei General

Horsemanship (This creature can't be blocked except by creatures with horsemanship.)
Whenever Zhang He, Wei General attacks, each other creature you control gets +1/+0 until end of turn.

Wei Night Raiders

Horsemanship (This creature can't be blocked except by creatures with horsemanship.)
Whenever Wei Night Raiders deals damage to an opponent, that player discards a card.

Battlefield Butcher

{5}, {T}: Each opponent loses 2 life. This ability costs {1} less to activate for each creature card in your graveyard.

Dauthi Slayer

Shadow (This creature can block or be blocked by only creatures with shadow.)
Dauthi Slayer attacks each combat if able.

Emergency Weld

Return target artifact or creature card from your graveyard to your hand. Create a 1/1 colorless Soldier artifact creature token.