
Aven Surveyor | Creature | Bird Scout | Flying
When Aven Surveyor enters the battlefield, choose one —
• Put a +1/+1 counter on Aven Surveyor.
• Return target creature to its owner's hand. | David Gaillet

Frost Walker | Creature | Elemental | When Frost Walker becomes the target of a spell or ability, sacrifice it. | Mike Bierek

Jeskai Infiltrator | Creature | Human Monk | Jeskai Infiltrator can't be blocked as long as you control no other creatures.
When Jeskai Infiltrator deals combat damage to a player, exile it and the top card of your library in a face-down pile, shuffle that pile, then manifest those cards. (To manifest a card, put it onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.) | Cynthia Sheppard

Jeskai Sage | Creature | Human Monk | Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
When Jeskai Sage dies, draw a card. | Craig J Spearing

Lotus Path Djinn | Creature | Djinn Monk | Flying
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) | Steve Argyle

Marang River Prowler | Creature | Human Rogue | Marang River Prowler can't block and can't be blocked.
You may cast Marang River Prowler from your graveyard as long as you control a black or green permanent. | Yefim Kligerman

Mindscour Dragon | Creature | Dragon | Flying
Whenever Mindscour Dragon deals combat damage to an opponent, target player mills four cards. | Wesley Burt

Mistfire Adept | Creature | Human Monk | Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Whenever you cast a noncreature spell, target creature gains flying until end of turn. | Clint Cearley

Renowned Weaponsmith | Creature | Human Artificer | {T}: Add {C}{C}. Spend this mana only to cast artifact spells or activate abilities of artifacts.
{U}, {T}: Search your library for a card named Heart-Piercer Bow or Vial of Dragonfire, reveal it, put it into your hand, then shuffle. | Eric Deschamps

Sage-Eye Avengers | Creature | Djinn Monk | Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Whenever Sage-Eye Avengers attacks, you may return target creature to its owner's hand if its power is less than Sage-Eye Avengers's power. | Dan Scott

Shu Yun, the Silent Tempest | Legendary Creature | Human Monk | Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Whenever you cast a noncreature spell, you may pay {R/W}{R/W}. If you do, target creature gains double strike until end of turn. | David Gaillet

Sultai Skullkeeper | Creature | Naga Shaman | When Sultai Skullkeeper enters the battlefield, mill two cards. | Ryan Barger

Torrent Elemental | Creature | Elemental | Flying
Whenever Torrent Elemental attacks, tap all creatures defending player controls.
{3}{B/G}{B/G}: Put Torrent Elemental from exile onto the battlefield tapped. Activate only as a sorcery. | James Paick

Ojutai, Soul of Winter | Legendary Creature | Dragon | Flying, vigilance
Whenever a Dragon you control attacks, tap target nonland permanent an opponent controls. That permanent doesn't untap during its controller's next untap step. | Chase Stone

Silumgar, the Drifting Death | Legendary Creature | Dragon | Flying, hexproof
Whenever a Dragon you control attacks, creatures defending player controls get -1/-1 until end of turn. | Steven Belledin