Amity — Whenever you attack with Splashing Mudskipper and exactly one other creature, surveil 1. When Splashing Mudskipper deals combat damage to a player this combat, you may transform it.

When Splinter Seer enters, crystallize.

{U}, {T}: Draw a card, then discard a card.
{3}{W}: Untap target creature you control.

Landfall — Whenever a land you control enters, put a +1/+1 counter on Spore Collector. It gains your choice of vigilance, first strike, or lifelink until end of turn.

Whenever Sporecaster or another Insect you control enters, each opponent loses 1 life.

Haste
Whenever Spotted Slugger deals combat damage to a player, you may have it deal damage equal to its power to target creature.

Flying
Springsoarer enters with a +1/+1 counter on it if a creature you controlled dealt combat damage to a player this turn.
Wander {2}{U}

Flying, haste
Whenever you cast a noncreature spell, put a +1/+1 counter on Sprite Dragon.

{2}, Sacrifice Spry Illuminator: Destroy target enchantment or noncreature artifact.

Flying
When Squallrunner Duo enters, create a 1/1 white Human creature token.
Nontoken creatures you control that have attacked this turn have wander {2}.

Level up {1}{W}
[level 2-3] This creature has first strike during your turn.
[level 4+] This creature has first strike during your turn.

Return target creature card with mana value 3 or less from your graveyard to the battlefield with an exalted counter on it.

Flying, deathtouch
Reflect {U}

Target creature you control dares 6.

Reach
Whenever Star-Studded Sagittaur deals combat damage to a player, you may bless target land.

Copy target spell you control with mana value 4 or less. You may choose new targets for the copy.

As an additional cost to cast this spell, you may tap two untapped creatures you control.
Exile target creature, then return that card to the battlefield under its owner's control unless you paid this spell's additional cost.

When Starseeker enters, surveil 2.

Exile target nonland permanent, then return it to the battlefield under its owner's control.
Crystallize.

Exile target creature, then return that card to the battlefield under its owner's control. When you do, pay for and choose any number.
+{W} — Distribute two +1/+1 counters among one or two creatures you control.
+{C} — Exile that creature again. Return that card to the battlefield under its owner's control at the beginning of the next end step.
+{B} — All creatures get -1/-1 until end of turn.

Flying
Whenever an opponent spends mana, if it wasn't spent to cast a spell from their hand, you draw a card. This ability triggers only once each turn.

Devoid
Up to two target creatures can't block this turn.
Coalesce {4}{R}{R}

Create a Berry token, then sacrifice any number of Berry tokens. Target creature you control gets +1/+1 until end of turn for each Berry sacrificed this way. Then it fights target creature you don't control.

When Stoic Sentinel enters, surveil 2.
{T}, Exile a card from your graveyard: Add one mana of any color.

Exile the top two cards of target opponent's library. You may play them until the end of your next turn, and mana of any type can be spent to cast them.