Phalanx Leader

Setessan Battle Priest

Creature — Human Cleric (1/3)

Heroic — Whenever you cast a spell that targets Setessan Battle Priest, you gain 2 life.

Battlewise Hoplite

Creature — Human Soldier (2/2)

Heroic — Whenever you cast a spell that targets Battlewise Hoplite, put a +1/+1 counter on Battlewise Hoplite, then scry 1. (To scry 1, look at the top card of your library, then you may put that card on the bottom of your library.)

Fabled Hero

Creature — Human Soldier (2/2)

Double strike
Heroic — Whenever you cast a spell that targets Fabled Hero, put a +1/+1 counter on Fabled Hero.

Favored Hoplite

Creature — Human Soldier (1/2)

Heroic — Whenever you cast a spell that targets Favored Hoplite, put a +1/+1 counter on Favored Hoplite and prevent all damage that would be dealt to it this turn.

Wingsteed Rider

Creature — Human Knight (2/2)

Flying
Heroic — Whenever you cast a spell that targets Wingsteed Rider, put a +1/+1 counter on Wingsteed Rider.

Arena Athlete

Creature — Human (2/1)

Heroic — Whenever you cast a spell that targets Arena Athlete, target creature an opponent controls can't block this turn.

Artisan of Forms

Creature — Human Wizard (1/1)

Heroic — Whenever you cast a spell that targets Artisan of Forms, you may have Artisan of Forms become a copy of target creature, except it has this ability.

Anax and Cymede

Legendary Creature — Human Soldier (3/2)

First strike, vigilance
Heroic — Whenever you cast a spell that targets Anax and Cymede, creatures you control get +1/+1 and gain trample until end of turn.

Leonin Snarecaster

Creature — Cat Soldier (2/1)

When Leonin Snarecaster enters the battlefield, you may tap target creature.

Anthousa, Setessan Hero

Legendary Creature — Human Warrior (4/5)

Heroic — Whenever you cast a spell that targets Anthousa, Setessan Hero, up to three target lands you control each become 2/2 Warrior creatures until end of turn. They're still lands.

Cavalry Pegasus

Creature — Pegasus (1/1)

Flying
Whenever Cavalry Pegasus attacks, each attacking Human gains flying until end of turn.

Wavecrash Triton

Creature — Merfolk Wizard (1/4)

Heroic — Whenever you cast a spell that targets Wavecrash Triton, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step.

Agent of the Fates

Creature — Human Assassin (3/2)

Deathtouch
Heroic — Whenever you cast a spell that targets Agent of the Fates, each opponent sacrifices a creature.

Akroan Crusader

Creature — Human Soldier (1/1)

Heroic — Whenever you cast a spell that targets Akroan Crusader, create a 1/1 red Soldier creature token with haste.

Centaur Battlemaster

Creature — Centaur Warrior (3/3)

Heroic — Whenever you cast a spell that targets Centaur Battlemaster, put three +1/+1 counters on Centaur Battlemaster.

Fleecemane Lion

Creature — Cat (3/3)

: Monstrosity 1. (If this creature isn't monstrous, put a +1/+1 counter on it and it becomes monstrous.)
As long as Fleecemane Lion is monstrous, it has hexproof and indestructible.

Staunch-Hearted Warrior

Creature — Human Warrior (2/2)

Heroic — Whenever you cast a spell that targets Staunch-Hearted Warrior, put two +1/+1 counters on Staunch-Hearted Warrior.

Traveling Philosopher

Creature — Human Advisor (2/2)

Labyrinth Champion

Creature — Human Warrior (2/2)

Heroic — Whenever you cast a spell that targets Labyrinth Champion, Labyrinth Champion deals 2 damage to any target.

Tormented Hero

Creature — Human Warrior (2/1)

Tormented Hero enters the battlefield tapped.
Heroic — Whenever you cast a spell that targets Tormented Hero, each opponent loses 1 life. You gain life equal to the life lost this way.