Pioneer Masters

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

Dragonlord Dromoka | Legendary Creature | Elder Dragon | This spell can't be countered. Flying, lifelink Your opponents can't cast spells during your turn. | Eric Deschamps

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

Loxodon Smiter | Creature | Elephant Soldier | This spell can't be countered. If a spell or ability an opponent controls causes you to discard Loxodon Smiter, put it onto the battlefield instead of putting it into your graveyard. | Ryan Barger

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

Unflinching Courage | Enchantment | Aura | Enchant creature Enchanted creature gets +2/+2 and has trample and lifelink. (Damage dealt by the creature also causes its controller to gain that much life.) | Mike Bierek

Growing Ranks | Enchantment | | At the beginning of your upkeep, populate. (Create a token that's a copy of a creature token you control.) | Madeline Boni

Karametra, God of Harvests | Legendary Enchantment Creature | God | Indestructible As long as your devotion to green and white is less than seven, Karametra isn't a creature. Whenever you cast a creature spell, you may search your library for a Forest or Plains card, put it onto the battlefield tapped, then shuffle. | Eric Deschamps

Ajani, Mentor of Heroes | Legendary Planeswalker | Ajani | +1: Distribute three +1/+1 counters among one, two, or three target creatures you control. +1: Look at the top four cards of your library. You may reveal an Aura, creature, or planeswalker card from among them and put it into your hand. Put the rest on the bottom of your library in any order. −8: You gain 100 life. | Aaron Miller

Alive | Sorcery | | Create a 3/3 green Centaur creature token. Fuse (You may cast one or both halves of this card from your hand.) | Nils Hamm

Chromanticore | Enchantment Creature | Manticore | Bestow {2}{W}{U}{B}{R}{G} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.) Flying, first strike, vigilance, trample, lifelink Enchanted creature gets +4/+4 and has flying, first strike, vigilance, trample, and lifelink. | Min Yum

Selesnya Guildgate | Land | Gate | This land enters tapped. {T}: Add {G} or {W}. | Howard Lyon