Theros

Fabled Hero | Creature | Human Soldier | Double strike Heroic — Whenever you cast a spell that targets Fabled Hero, put a +1/+1 counter on Fabled Hero. | Aaron Miller

Lagonna-Band Elder | Creature | Centaur Advisor | When Lagonna-Band Elder enters the battlefield, if you control an enchantment, you gain 3 life. | Min Yum

Observant Alseid | Enchantment Creature | Nymph | Bestow {4}{W} (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.) Vigilance Enchanted creature gets +2/+2 and has vigilance. | Todd Lockwood

Scholar of Athreos | Creature | Human Cleric | {2}{B}: Each opponent loses 1 life. You gain life equal to the life lost this way. | Cynthia Sheppard

Wingsteed Rider | Creature | Human Knight | Flying Heroic — Whenever you cast a spell that targets Wingsteed Rider, put a +1/+1 counter on Wingsteed Rider. | Cynthia Sheppard

2 LSV

Crackling Triton | Creature | Merfolk Wizard | {2}{R}, Sacrifice Crackling Triton: It deals 2 damage to any target. | Greg Staples

Meletis Charlatan | Creature | Human Wizard | {2}{U}, {T}: The controller of target instant or sorcery spell copies it. That player may choose new targets for the copy. | Jason A. Engle

Nimbus Naiad | Enchantment Creature | Nymph | Bestow {4}{U} (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 Enchanted creature gets +2/+2 and has flying. | David Palumbo

2 LSV

Thassa, God of the Sea | Legendary Enchantment Creature | God | Indestructible As long as your devotion to blue is less than five, Thassa isn't a creature. (Each {U} in the mana costs of permanents you control counts toward your devotion to blue.) At the beginning of your upkeep, scry 1. {1}{U}: Target creature you control can't be blocked this turn. | Jason Chan

3.5 LSV

Triton Fortune Hunter | Creature | Merfolk Soldier | Heroic — Whenever you cast a spell that targets Triton Fortune Hunter, draw a card. | Clint Cearley

Wavecrash Triton | Creature | Merfolk Wizard | 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. | Ryan Barger

Agent of the Fates | Creature | Human Assassin | Deathtouch Heroic — Whenever you cast a spell that targets Agent of the Fates, each opponent sacrifices a creature. | Matt Stewart

Blood-Toll Harpy | Creature | Harpy | Flying When Blood-Toll Harpy enters the battlefield, each player loses 1 life. | Kev Walker

Felhide Minotaur | Creature | Minotaur | | Kev Walker

Mogis's Marauder | Creature | Human Berserker | When Mogis's Marauder enters the battlefield, up to X target creatures each gain intimidate and haste until end of turn, where X is your devotion to black. (A creature with intimidate can't be blocked except by artifact creatures and/or creatures that share a color with it. Each {B} in the mana costs of permanents you control counts toward your devotion to black.) | Chase Stone

Nighthowler | Enchantment Creature | Horror | Bestow {2}{B}{B} (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.) Nighthowler and enchanted creature each get +X/+X, where X is the number of creature cards in all graveyards. | Nils Hamm

2 LSV

Flamespeaker Adept | Creature | Human Shaman | Whenever you scry, Flamespeaker Adept gets +2/+0 and gains first strike until end of turn. | Lucas Graciano

Minotaur Skullcleaver | Creature | Minotaur Berserker | Haste When Minotaur Skullcleaver enters the battlefield, it gets +2/+0 until end of turn. | Phill Simmer

Rageblood Shaman | Creature | Minotaur Shaman | Trample Other Minotaur creatures you control get +1/+1 and have trample. | Mike Bierek

Spearpoint Oread | Enchantment Creature | Nymph | Bestow {5}{R} (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.) First strike Enchanted creature gets +2/+2 and has first strike. | Todd Lockwood

Two-Headed Cerberus | Creature | Dog | Double strike (This creature deals both first-strike and regular combat damage.) | Karl Kopinski

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

4 LSV

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

2.5 LSV

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

Daxos of Meletis | Legendary Creature | Human Soldier | Daxos of Meletis can't be blocked by creatures with power 3 or greater. Whenever Daxos of Meletis deals combat damage to a player, exile the top card of that player's library. You gain life equal to that card's mana value. Until end of turn, you may cast that card and you may spend mana as though it were mana of any color to cast that spell. | Karla Ortiz

Anax and Cymede | Legendary Creature | Human Soldier | 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. | Willian Murai

4 LSV

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

Spellheart Chimera | Creature | Chimera | Flying, trample Spellheart Chimera's power is equal to the number of instant and sorcery cards in your graveyard. | Svetlin Velinov

Burnished Hart | Artifact Creature | Elk | {3}, Sacrifice Burnished Hart: Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle. | Yeong-Hao Han

2 LSV

Guardians of Meletis | Artifact Creature | Golem | Defender (This creature can't attack.) | Magali Villeneuve

Opaline Unicorn | Artifact Creature | Unicorn | {T}: Add one mana of any color. | Christine Choi