Haste
Arid Outrider gets +1/+0 as long as you control a token.

Whenever Ascended Seer attacks, it gets +1/+0 until end of turn unless defending player pays {1}.

When Askir's Rearguard enters, if a creature you control dealt combat damage to a player this turn, draw a card.
Wander {1}{U}

Trample
Whenever Aspiring Anarchist attacks, you may have its base power and toughness become equal to the power and toughness of another target attacking creature until end of turn.

When Ballot Registrar enters, make a pledge.
Activated abilities of nonland permanents you control cost {1} less to activate. This effect can't reduce the mana in that cost to less than one mana.

Flash
At the beginning of your end step, if you've cast no spells this turn, you may draw a card, then discard a card.

Ward {2}
{U}: Spells you cast this turn can be cast as though they had flash.

When Beatswitch Bot leaves the battlefield, if it's your turn, draw a card.

When Berry Fermenter enters, create a Berry token.
{2}, Sacrifice a Berry: You gain 3 life.
{T}, Sacrifice a Berry: Add one mana of any color.

Brass Laborer enters with two reach counters on it.

Haste
{T}, Discard a card: Put a +1/+1 counter on another target creature you control and untap it. It gains haste until end of turn. Activate only as a sorcery.

Callaphe can't be blocked by creatures with mana value 3 or greater.
Whenever Callaphe the Mariner deals combat damage to a player, you get an experience counter. Then if you have three or more experience counters, bless target player.

Flying
Whenever Capital Skyraiders deals combat damage to a player, integrate the top card of that player's library.
Capital Skyraiders gets +3/+3 as long as four or more cards are integrated onto it.

Amity — Whenever you attack with Charged Party and exactly one other creature, create a token that's a copy of Charged Party that's tapped and attacking, except its power and toughness are switched. Sacrifice the token at the beginning of the next end step.

Flying
When Charming Siren leaves the battlefield, if it wasn't blocking, you may bless target creature.

Lifelink
{1}{W}: Put a stun counter on target creature that attacked this turn. Activate only once each turn.

Drop — When Club Promoter enters, choose one. If you didn't cast any creature spells during your last turn, you may choose both instead.
• Destroy target artifact or enchantment.
• Put two +1/+1 counters on Club Promoter.

Codename: Bumblebee enters with a +1/+1 counter and a flying counter on it.
At the beginning of your upkeep, you may move a counter from Codename: Bumblebee onto another creature.

Flying
{1}, {T}: Surveil 1. This ability costs {1} less to activate if you control a blue permanent.

{T}, Sacrifice an artifact: Add one mana of any type.
Once each turn, when you cast an instant or sorcery spell, you may create a 1/1 colorless Construct artifact creature token.

When Contest Coordinator enters, look at the top five cards of your library. You may reveal a Plains card or a nonland card with an activated ability from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

Whenever a creature dies, scry 1.

Flash
Whenever you cast a spell during an opponent's turn, scry 1 and put a +1/+1 counter on Cutthroat Kallukah.

Flying
Whenever Cybat becomes tapped, you gain 1 life.

First strike
Whenever Dated Mechanoid becomes tapped, another target creature you control gets +1/+1 until end of turn.