Humans

At the beginning of your upkeep, you may put a charge counter on Aether Vial.

{T}: You may put a creature card with converted mana cost equal to the number of charge counters on Aether Vial from your hand onto the battlefield.

{T}: Add one mana of any color. Spend this mana only to cast a creature spell.

As Cavern of Souls enters the battlefield, choose a creature type.

{T}: Add {C}.

{T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can't be countered.

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

At the beginning of your upkeep, reveal the top card of your library and put that card into your hand. You lose life equal to its converted mana cost.

({T}: Add {W} or {U}.)

As Hallowed Fountain enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

{T}, Pay 1 life: Add {G} or {W}.

{1}, {T}, Sacrifice Horizon Canopy: Draw a card.

Deathtouch

Whenever Isareth the Awakener attacks, you may pay {X}. When you do, return target creature card with converted mana cost X from your graveyard to the battlefield with a corpse counter on it. If that creature would leave the battlefield, exile it instead of putting it anywhere else.

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

Flying

When Kitesail Freebooter enters the battlefield, target opponent reveals their hand. You choose a noncreature, nonland card from it. Exile that card until Kitesail Freebooter leaves the battlefield.

Flying, vigilance, haste

As Meddling Mage enters the battlefield, choose a nonland card name.

Spells with the chosen name can't be cast.

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)

{T}: Add {G}, {W}, or {U}.

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 has "When this creature becomes the target of a spell or ability, sacrifice it."

({T}: Add {W}.)

When Reflector Mage enters the battlefield, return target creature an opponent controls to its owner's hand. That creature's owner can't cast spells with the same name as that creature until your next turn.

When Thalia's Lieutenant enters the battlefield, put a +1/+1 counter on each other Human you control.

Whenever another Human enters the battlefield under your control, put a +1/+1 counter on Thalia's Lieutenant.

First strike

Noncreature spells cost {1} more to cast.

First strike

Creatures and nonbasic lands your opponents control enter the battlefield tapped.

As Unclaimed Territory enters the battlefield, choose a creature type.

{T}: Add {C}.

{T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type.