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.

Flying
When Breaching Jaxl enters, untap target nonland permanent.
Wander {2}{U}

Flying
When Bringer of Heliod's Light enters, you may bless target creature.

Amity — Whenever you attack with Bumbling Pollinator and exactly one other creature, create a 1/1 green Plant creature token.

Drop — When Bumping Betta enters, if you didn't cast any creature spells during your last turn, return up to one target nonland permanent to its owner's hand.

At the beginning of your end step, if a creature card or creature token was put into your graveyard from anywhere this turn, surveil 1.

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

Surface {3}{G}{G}
Buried Geode surfaces with a +1/+1 counter.

Amity — Whenever you attack with Burning Celestial and exactly one other creature, Burning Celestial acclimates.
As long as you control a red Weather, Burning Celestial has trample.

Flying

Amity — Whenever you attack with Calming Celestial and exactly one other creature, Calming Celestial acclimates.
As long as you control a blue Weather, Calming Celestial has flying.

Once each turn, when Carefree Kappa enters or becomes the target of a spell or ability, you may create a Weather enchantment token that's all colors named Looks Like Rain with “Whenever you attack, you gain 1 life.”
Carefree Kappa gets +1/+1 for each Weather you control.

Vigilance
Once each turn, if you would put one or more counters on a creature you control, you may put that many of each of those kinds of counters on each creature you control instead.

This spell costs {1} less to cast for each creature that died this turn.
{2}, Sacrifice a creature: Choose one —
• Each opponent loses 2 life.
• Caustic Influencer gets +2/+2 until end of turn.

{W}, Exile an artifact or enchantment card from your graveyard: You gain 3 life.
{2}{U}, Exile an instant or sorcery card from your graveyard: Draw a card.
{4}{B}, Exile a creature or planeswalker card from your graveyard: Create a tapped 0/0 colorless Robot artifact creature token with three +1/+1 counters on it.

Whenever you attack, target nonlegendary creature can't block this turn.
Whenever one or more creatures you control deal combat damage to a player, put a +1/+1 counter on Chamille, then create a Treasure token for each counter on it.

{W}: Charismatic Chameleon gains lifelink until end of turn.
{1}{R}: Charismatic Chameleon gets +1/+1 until end of turn.
{2}{U}: Charismatic Chameleon can't be blocked this turn.

First strike
When Chosen of Heliod enters, bless target creature.
{4}{W}{W}: Bless target creature you control. Activate only as a sorcery.

You may cast this spell without paying its mana cost if your devotion to black is four or greater.
Deathtouch
Whenever Chrolcatos deals combat damage to player, you draw a card and you lose 1 life.

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.

When Cliffwalker enters, return a permanent you control to its owner's hand.
Wander {1}{W}

Vigilance
Whenever Dark Ambassador attacks, exile up to one target creature, then return that card to the battlefield tapped under its owner's control.

Flying
When Daybreak Rider enters, you may bless another target creature.

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.

Once each turn, when another artifact you control enters, you may tap or untap target creature.