Lowland Tracker

First strike
Provoke (Whenever this creature attacks, you may have target creature defending player controls untap and block it if able.)

White Knight

First strike (This creature deals combat damage before creatures without first strike.)
Protection from black (This creature can’t be blocked, targeted, dealt damage, or enchanted by anything black.)

Akroma, Angel of Wrath Avatar

Whenever a creature enters the battlefield under your control, it gains two abilities chosen at random from flying, first strike, trample, haste, protection from black, protection from red, and vigilance.

Daru Lancer

First strike
Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

Battering Craghorn

First strike
Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

Daru Cavalier

First strike
When Daru Cavalier enters the battlefield, you may search your library for a card named Daru Cavalier, reveal it, and put it into your hand. If you do, shuffle your library.

Valor

First strike
As long as Valor is in your graveyard and you control a Plains, creatures you control have first strike.

Possessed Barbarian

First strike
Threshold — As long as seven or more cards are in your graveyard, Possessed Barbarian gets +1/+1, is black, and has “, : Destroy target red creature.”

Hell-Bent Raider

First strike, haste
Discard a card at random: Hell-Bent Raider gains protection from white until end of turn.

Black Knight

First strike (This creature deals combat damage before creatures without first strike.)
Protection from white (This creature can’t be blocked, targeted, dealt damage, or enchanted by anything white.)

White Knight

First strike (This creature deals combat damage before creatures without first strike.)
Protection from black (This creature can’t be blocked, targeted, dealt damage, or enchanted by anything black.)

Resilient Wanderer

First strike
Discard a card: Resilient Wanderer gains protection from the color of your choice until end of turn.

Enlistment Officer

First strike
When Enlistment Officer enters the battlefield, reveal the top four cards of your library. Put all Soldier cards revealed this way into your hand and the rest on the bottom of your library in any order.

Wall of Spears

Defender (This creature can’t attack.)
First strike