Flying
Whenever Aqueous Drake deals combat damage to a player, scry 1.

Vigilance
Whenever Bureau Mentor attacks, teach target attacking creature with lesser power vigilance. Untap that creature.

Flying

Whenever Defthand Infiltrator deals combat damage to a player, put a +1/+1 counter on it if it doesn't have one on it.
Defthand Infiltrator can't be blocked as long as it has a counter on it.

Whenever this creature enters or leaves the battlefield, surveil 1.

When this creature enters, create a 1/1 white Monk creature token with vigilance.
Flow — {3}{U}: This creature can't be blocked this turn.

Flash
Whenever you cast Siflir, Elder Pawn or another spell, if you paid an alternate or additional cost to cast it, draw a card.
Wander {3}{U}{U}

Ninjutsu {1}{U}
If you would draw a card except the first one you draw in each of your draw steps, draw two cards instead.

Flying
When Blue Collar Bloodsucker enters, you gain 2 life. Then if you control a red permanent, Blue Collar Bloodsucker deals 2 damage to each opponent.

Whenever you cast a spell from your graveyard, each opponent loses 1 life and you gain 1 life.
Surface {3}{B}{B}. Chum Chaser surfaces transformed.

Defender
When Feasting Sloth enters, create a Berry token.
Feasting Sloth can attack as though it didn't have defender if it's enchanted, equipped, or has a counter on it.

Whenever Hazakh Conscriptor deals combat damage to a player, create a 2/2 colorless Minion creature token with decayed.

Flying
Approval — When Judge, Jury, and Executioner enters, exile up to one target creature with mana value less than or equal to the number of colors among permanents you control.

Whenever a nontoken creature you control dies, you draw a card and you lose 1 life.
{2}{B}, Sacrifice this creature: Create an X/X black Demon creature token, where X is the number of creatures you controlled that died this turn. Activate only as a sorcery.

When this creature enters, create a 2/2 white Samurai creature token with exalted.
Cycling {2}

Flying
Whenever one or more creatures you control deal combat damage to a player, that player mills two cards.

Whenever Reborn Scuttler attacks, up to one target creature has base toughness 1 until end of turn.

Menace
Surface {3}{B}{B}

When Thornlasher Mortis enters, mill two cards.
Whenever one or more cards leave your graveyard, create a 1/1 green Saproling creature token. This ability triggers only once each turn.

{2}{B}, {T}: Target opponent loses 2 life.
{6}{B}{B}, {T}: Target opponent loses 5 life.

Sacrifice Archaeovolcanologist: Choose an instant, sorcery, or land card in your graveyard. You may play that card this turn.

Flying, haste
Whenever you cast a spell that targets a creature you control, you may return Ashlands Phoenix from your graveyard to your hand.

Haste
When this creature enters, put a +1/+1 counter on target creature you control.

Approval — When Flock Favorites enters, exile the top X cards of your library, where X is the number of colors among permanents you control. Until the end of your next turn, you may play those cards.

Revered
Whenever this creature attacks, add {R}. Until end of turn, you don't lose this mana as steps and phases end.