Theros

Battlewise Valor | Instant | | Target creature gets +2/+2 until end of turn. Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.) | Zack Stella

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

Chosen by Heliod | Enchantment | Aura | Enchant creature When Chosen by Heliod enters the battlefield, draw a card. Enchanted creature gets +0/+2. | Zack Stella

Glare of Heresy | Sorcery | | Exile target white permanent. | Raymond Swanland

Last Breath | Instant | | Exile target creature with power 2 or less. Its controller gains 4 life. | Nils Hamm

Leonin Snarecaster | Creature | Cat Soldier | When Leonin Snarecaster enters the battlefield, you may tap target creature. | Kev Walker

Ordeal of Heliod | Enchantment | Aura | Enchant creature Whenever enchanted creature attacks, put a +1/+1 counter on it. Then if it has three or more +1/+1 counters on it, sacrifice Ordeal of Heliod. When you sacrifice Ordeal of Heliod, you gain 10 life. | Lucas Graciano

Phalanx Leader | Creature | Human Soldier | Heroic — Whenever you cast a spell that targets Phalanx Leader, put a +1/+1 counter on each creature you control. | David Palumbo

Setessan Battle Priest | Creature | Human Cleric | Heroic — Whenever you cast a spell that targets Setessan Battle Priest, you gain 2 life. | Wesley Burt

Traveling Philosopher | Creature | Human Advisor | | James Ryman

Battlewise Hoplite | Creature | Human Soldier | 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.) | Willian Murai

Akroan Hoplite | Creature | Human Soldier | Whenever Akroan Hoplite attacks, it gets +X/+0 until end of turn, where X is the number of attacking creatures you control. | Igor Kieryluk

Fleecemane Lion | Creature | Cat | {3}{G}{W}: 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. | Slawomir Maniak