Theros

Agent of Horizons | Creature | Human Rogue | {2}{U}: Agent of Horizons can't be blocked this turn. | Clint Cearley

Boon Satyr | Enchantment Creature | Satyr | Flash Bestow {3}{G}{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.) Enchanted creature gets +4/+2. | Wesley Burt

Bow of Nylea | Legendary Enchantment Artifact | | Attacking creatures you control have deathtouch. {1}{G}, {T}: Choose one — • Put a +1/+1 counter on target creature. • Bow of Nylea deals 2 damage to target creature with flying. • You gain 3 life. • Put up to four target cards from your graveyard on the bottom of your library in any order. | Yeong-Hao Han

Fade into Antiquity | Sorcery | | Exile target artifact or enchantment. | Noah Bradley

Feral Invocation | Enchantment | Aura | Flash (You may cast this spell any time you could cast an instant.) Enchant creature Enchanted creature gets +2/+2. | Mathias Kollros

Nessian Courser | Creature | Centaur Warrior | | Steve Prescott

Reverent Hunter | Creature | Human Archer | When Reverent Hunter enters the battlefield, put a number of +1/+1 counters on it equal to your devotion to green. (Each {G} in the mana costs of permanents you control counts toward your devotion to green.) | Wesley Burt

Satyr Piper | Creature | Satyr Rogue | {3}{G}: Target creature must be blocked this turn if able. | Christopher Moeller

Shredding Winds | Instant | | Shredding Winds deals 7 damage to target creature with flying. | Christopher Moeller

Time to Feed | Sorcery | | Choose target creature an opponent controls. When that creature dies this turn, you gain 3 life. Target creature you control fights that creature. (Each deals damage equal to its power to the other.) | Wayne Reynolds

Chronicler of Heroes | Creature | Centaur Wizard | When Chronicler of Heroes enters the battlefield, draw a card if you control a creature with a +1/+1 counter on it. | John Stanko