Theros Promos

Enchantment Creature — Archon

Bestow {5}{W}{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.)
Flying, first strike
Enchanted creature gets +4/+4 and has flying and first strike.

Celestial Archon

Creature — Human Soldier

Heroic — Whenever you cast a spell that targets this creature, put a +1/+1 counter on each creature you control.

Phalanx Leader

Legendary Enchantment Artifact

Whenever a creature you control deals combat damage to a player, you may draw a card.
{1}{U}, {T}: Creatures your opponents control attack this turn if able.

Bident of Thassa

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 this creature becomes monstrous, tap up to four target creatures. Those creatures don't untap during their controllers' untap steps for as long as you control this creature.

Shipbreaker Kraken

Harpy

Creature — Demon

Flying
When this creature enters, create a number of 1/1 black Harpy creature tokens with flying equal to your devotion to black. (Each {B} in the mana costs of permanents you control counts toward your devotion to black.)
At the beginning of your upkeep, sacrifice a creature.

Abhorrent Overlord

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.)
This creature and enchanted creature each get +X/+X, where X is the number of creature cards in all graveyards.

Nighthowler

Creature — Elemental

{5}{R}{R}: Monstrosity 3. (If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.)
When this creature becomes monstrous, each player sacrifices three lands of their choice.

Ember Swallower

Legendary Creature — Human Warrior

Heroic — Whenever you cast a spell that targets Anthousa, up to three target lands you control each become 2/2 Warrior creatures until end of turn. They're still lands.

Anthousa, Setessan Hero

Creature — Human Druid

{T}: Add an amount of {G} equal to your devotion to green. (Each {G} in the mana costs of permanents you control counts toward your devotion to green.)

Karametra's Acolyte

Creature — Plant

Defender, hexproof
{T}: Add one mana of any color.