Cavern of Souls

As Cavern of Souls enters the battlefield, choose a creature type. {T}: Add {1} to your mana pool. {T}: Add one mana of any color to your mana pool. Spend this mana only to cast a creature spell of the chosen type, and that spell can't be countered.

Kessig Malcontents

When Kessig Malcontents enters the battlefield, it deals damage to target player equal to the number of Humans you control.

Thalia, Guardian of Thraben

First strike Noncreature spells cost {1} more to cast.

Venser, Shaper Savant

Flash (You may play this spell any time you could play an instant.) When Venser, Shaper Savant comes into play, return target spell or permanent to its owner's hand.

Champion of the Parish

Whenever another Human enters the battlefield under your control, put a +1/+1 counter on Champion of the Parish.

Mantis Rider

Flying, vigilance, haste

Phantasmal Image

You may have Phantasmal Image enter the battlefield as a copy of any creature on the battlefield, except it's an Illusion in addition to its other types and it gains "When this creature becomes the target of a spell or ability, sacrifice it."

Xathrid Necromancer

Whenever Xathrid Necromancer or another Human creature you control dies, put a 2/2 black Zombie creature token onto the battlefield tapped.

Aether Vial

At the beginning of your upkeep, you may put a charge counter on ?ther Vial. {T}: You may put a creature card with converted mana cost equal to the number of charge counters on ?ther Vial from your hand onto the battlefield.

Meddling Mage

As Meddling Mage comes into play, name a nonland card. The named card can't be played.

Ancient Ziggurat

{T}: Add one mana of any color to your mana pool. Spend this mana only to cast creature spells.

Noble Hierarch

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.) {T}: Add {G}, {W}, or {U} to your mana pool.

Seachrome Coast

Seachrome Coast enters the battlefield tapped unless you control two or fewer other lands. {T}: Add {W} or {U} to your mana pool.

Reflector Mage

Horizon Canopy

Mana Confluence

Thalia's Lieutenant

Kitesail Freebooter

1B

Unclaimed Territory

Dire Fleet Daredevil

First strike When Dire Fleet Daredevil enters the battlefield, exile target instant or sorcery card from an opponent's graveyard. You may cast that card this turn, and you may spend mana as though it were mana of any type to cast that spell. If that card would be put into a graveyard this turn, exile it instead.

Plains

({T}: Add {W}.)