Theros Beyond Death

Arena Trickster | Creature | Human Shaman | Whenever you cast your first spell during each opponent's turn, put a +1/+1 counter on Arena Trickster. | PINDURSKI

Flummoxed Cyclops | Creature | Cyclops | Reach Whenever two or more creatures your opponents control attack, Flummoxed Cyclops can't block this combat. | Mark Behm

Skophos Maze-Warden | Creature | Minotaur Warrior | {1}: Skophos Maze-Warden gets +1/-1 until end of turn. Whenever another creature becomes the target of an ability of a land you control named Labyrinth of Skophos, you may have Skophos Maze-Warden fight that creature. (Each deals damage equal to its power to the other.) | Jason Rainville

Tectonic Giant | Creature | Elemental Giant | Whenever Tectonic Giant attacks or becomes the target of a spell an opponent controls, choose one — • Tectonic Giant deals 3 damage to each opponent. • Exile the top two cards of your library. Choose one of them. Until the end of your next turn, you may play that card. | Slawomir Maniak

Haktos the Unscarred | Legendary Creature | Human Warrior | Haktos the Unscarred attacks each combat if able. As Haktos enters the battlefield, choose 2, 3, or 4 at random. Haktos has protection from each mana value other than the chosen number. | Ryan Pancoast