Theros Beyond Death

Daxos, Blessed by the Sun | Legendary Enchantment Creature | Demigod | Daxos's toughness is equal to your devotion to white. (Each {W} in the mana costs of permanents you control counts toward your devotion to white.) Whenever another creature you control enters the battlefield or dies, you gain 1 life. | Lius Lasahido

Stinging Lionfish | Enchantment Creature | Fish | Whenever you cast your first spell during each opponent's turn, you may tap or untap target nonland permanent. | Christopher Burdett

Threnody Singer | Creature | Siren | Flash Flying When Threnody Singer enters the battlefield, target creature an opponent controls gets -X/-0 until end of turn, where X is your devotion to blue. (Each {U} in the mana costs of permanents you control counts toward your devotion to blue.) | PINDURSKI

Mire Triton | Creature | Zombie Merfolk | Deathtouch When Mire Triton enters the battlefield, mill two cards and you gain 2 life. | Seb McKinnon

Tymaret, Chosen from Death | Legendary Enchantment Creature | Demigod | Tymaret's toughness is equal to your devotion to black. (Each {B} in the mana costs of permanents you control counts toward your devotion to black.) {1}{B}: Exile up to two target cards from graveyards. You gain 1 life for each creature card exiled this way. | Chase Stone

Blood Aspirant | Creature | Satyr Berserker | Whenever you sacrifice a permanent, put a +1/+1 counter on Blood Aspirant. {1}{R}, {T}, Sacrifice a creature or enchantment: Blood Aspirant deals 1 damage to target creature. That creature can't block this turn. | Tyler Walpole

Careless Celebrant | Creature | Satyr Shaman | When Careless Celebrant dies, it deals 2 damage to target creature or planeswalker an opponent controls. | Mathias Kollros

Destiny Spinner | Enchantment Creature | Human | Creature and enchantment spells you control can't be countered. {3}{G}: Target land you control becomes an X/X Elemental creature with trample and haste until end of turn, where X is the number of enchantments you control. It's still a land. | Livia Prima

Nessian Hornbeetle | Creature | Insect | At the beginning of combat on your turn, if you control another creature with power 4 or greater, put a +1/+1 counter on Nessian Hornbeetle. | Jason Felix

Nessian Wanderer | Creature | Satyr Scout | Constellation — Whenever an enchantment enters the battlefield under your control, look at the top three cards of your library. You may reveal a land card from among them and put that card into your hand. Put the rest on the bottom of your library in a random order. | Matt Stewart

Devourer of Memory | Creature | Nightmare | Whenever one or more cards are put into your graveyard from your library, Devourer of Memory gets +1/+1 until end of turn and can't be blocked this turn. {1}{U}{B}: Mill a card. | Daarken

Mischievous Chimera | Enchantment Creature | Chimera | Flying Whenever you cast your first spell during each opponent's turn, Mischievous Chimera deals 1 damage to each opponent. Scry 1. | Antonio José Manzanedo

Slaughter-Priest of Mogis | Creature | Minotaur Shaman | Whenever you sacrifice a permanent, Slaughter-Priest of Mogis gets +2/+0 until end of turn. {2}, Sacrifice another creature or an enchantment: Slaughter-Priest of Mogis gains first strike until end of turn. | Steve Prescott