Theros

Elspeth, Sun's Champion | Legendary Planeswalker | Elspeth | +1: Create three 1/1 white Soldier creature tokens. −3: Destroy all creatures with power 4 or greater. −7: You get an emblem with "Creatures you control get +2/+2 and have flying." | Eric Deschamps

Evangel of Heliod | Creature | Human Cleric | When Evangel of Heliod enters the battlefield, create a number of 1/1 white Soldier creature tokens equal to your devotion to white. (Each {W} in the mana costs of permanents you control counts toward your devotion to white.) | Nils Hamm

Vanquish the Foul | Sorcery | | Destroy target creature with power 4 or greater. Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.) | Eric Deschamps

Benthic Giant | Creature | Giant | Hexproof (This creature can't be the target of spells or abilities your opponents control.) | Jaime Jones

Horizon Scholar | Creature | Sphinx | Flying When Horizon Scholar enters the battlefield, scry 2. (Look at the top two cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.) | Karl Kopinski

Sea God's Revenge | Sorcery | | Return up to three target creatures your opponents control to their owners' hands. Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.) | Eric Velhagen

Shipbreaker Kraken | Creature | Kraken | {6}{U}{U}: Monstrosity 4. (If this creature isn't monstrous, put four +1/+1 counters on it and it becomes monstrous.) When Shipbreaker Kraken becomes monstrous, tap up to four target creatures. Those creatures don't untap during their controllers' untap steps for as long as you control Shipbreaker Kraken. | Jack Wang

Thassa's Bounty | Sorcery | | Draw three cards. Target player mills three cards. | Ryan Yee

Hythonia the Cruel | Legendary Creature | Gorgon | Deathtouch {6}{B}{B}: Monstrosity 3. (If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.) When Hythonia the Cruel becomes monstrous, destroy all non-Gorgon creatures. | Chris Rahn

Loathsome Catoblepas | Creature | Beast | {2}{G}: Loathsome Catoblepas must be blocked this turn if able. When Loathsome Catoblepas dies, target creature an opponent controls gets -3/-3 until end of turn. | Christopher Burdett

Sip of Hemlock | Sorcery | | Destroy target creature. Its controller loses 2 life. | Nils Hamm

Titan of Eternal Fire | Creature | Giant | Each Human creature you control has "{R}, {T}: This creature deals 1 damage to any target." | Aleksi Briclot

Nemesis of Mortals | Creature | Snake | This spell costs {1} less to cast for each creature card in your graveyard. {7}{G}{G}: Monstrosity 5. This ability costs {1} less to activate for each creature card in your graveyard. (If this creature isn't monstrous, put five +1/+1 counters on it and it becomes monstrous.) | Mathias Kollros

Vulpine Goliath | Creature | Fox | Trample | Adam Paquette

Medomai the Ageless | Legendary Creature | Sphinx | Flying Whenever Medomai the Ageless deals combat damage to a player, take an extra turn after this one. Medomai the Ageless can't attack during extra turns. | David Palumbo