Whenever another black creature enters the battlefield under your control, target creature gains intimidate until end of turn. (It can't be blocked except by artifact creatures and/or creatures that share a color with it.)

Pay 2 life: Shadowcloak Vampire gains flying until end of turn. (It can't be blocked except by creatures with flying or reach.)

Draw a card for each creature you control.
Ferocious — You gain 4 life for each creature you control with power 4 or greater.

[+1]: Until your next turn, creatures you control get +1/+0 and gain lifelink.
[−2]: Create a 2/2 black Vampire creature token with flying.
[−6]: You get an emblem with "At the beginning of each opponent's upkeep, that player sacrifices a creature."

When Stromkirk Mentor enters the battlefield, put a +1/+1 counter on another target Vampire you control.

Flying
Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)
Other creatures you control have exalted. (If a creature has multiple instances of exalted, each triggers separately.)

When Sultai Soothsayer enters the battlefield, look at the top four cards of your library. Put one of them into your hand and the rest into your graveyard.

, Pay 3 life: Flip a coin. If you win the flip, you gain 6 life.

Flying
As Thief of Blood enters the battlefield, remove all counters from all permanents. Thief of Blood enters the battlefield with a +1/+1 counter on it for each counter removed this way.

Devoid (This card has no color.)
Target player reveals their hand. You choose a card from it with converted mana cost 3 or greater and exile that card.

Delve (Each card you exile from your graveyard while casting this spell pays for .)
Draw three cards.

Soulbond (You may pair this creature with another unpaired creature when either enters the battlefield. They remain paired for as long as you control both of them.)
As long as Trusted Forcemage is paired with another creature, each of those creatures gets +1/+1.

Populate. (Create a token that's a copy of a creature token you control.)

Flying, trample
Whenever Wasitora, Nekoru Queen deals combat damage to a player, that player sacrifices a creature. If the player can't, you create a 3/3 black, red, and green Cat Dragon creature token with flying.

Flying
: Target creature gains flying until end of turn.

Flying
Heroic — Whenever you cast a spell that targets Wingsteed Rider, put a +1/+1 counter on Wingsteed Rider.

Whenever you cast an instant or sorcery spell, create a 1/1 red Elemental creature token.

When Youthful Scholar dies, draw two cards.