Pioneer Masters

Artful Maneuver | Instant | | Target creature gets +2/+2 until end of turn. Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.) | Lars Grant-West

Compulsory Rest | Enchantment | Aura | Enchant creature Enchanted creature can't attack or block. Enchanted creature has "{2}, Sacrifice this creature: You gain 2 life." | Eric Deschamps

Hero of Iroas | Creature | Human Soldier | Aura spells you cast cost {1} less to cast. Heroic — Whenever you cast a spell that targets Hero of Iroas, put a +1/+1 counter on Hero of Iroas. | Willian Murai

Keening Apparition | Creature | Spirit | Sacrifice Keening Apparition: Destroy target enchantment. | Tran Nguyen

Sejiri Shelter | Instant | | Target creature you control gains protection from the color of your choice until end of turn. | Darek Zabrocki

Swift Reckoning | Sorcery | | Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, you may cast Swift Reckoning as though it had flash. (You may cast it any time you could cast an instant.) Destroy target tapped creature. | Chris Rahn

Sungrace Pegasus | Creature | Pegasus | Flying Lifelink (Damage dealt by this creature also causes you to gain that much life.) | Phill Simmer

Courier's Briefcase | Artifact | Treasure | When Courier's Briefcase enters, create a 1/1 green and white Citizen creature token. {T}, Sacrifice Courier's Briefcase: Add one mana of any color. {W}{U}{B}{R}{G}, {T}, Sacrifice Courier's Briefcase: Draw three cards. | Josu Hernaiz

Imperious Oligarch | Creature | Human Cleric | Vigilance Afterlife 1 (When this creature dies, create a 1/1 white and black Spirit creature token with flying.) | Johannes Voss

Martial Glory | Instant | | Target creature gets +3/+0 until end of turn. Target creature gets +0/+3 until end of turn. | Raymond Swanland

Selesnya Charm | Instant | | Choose one — • Target creature gets +2/+2 and gains trample until end of turn. • Exile target creature with power 5 or greater. • Create a 2/2 white Knight creature token with vigilance. | Zoltan Boros