Surface {2}{B}{G}{U}. Riverbed Snapper surfaces transformed.

Ward {3}
Daunting Snapper can't be blocked by creatures with power 2 or less.

Surface {U}. Scuttling Cicada surfaces transformed.

Flying

When Sea Breeze enters, return up to one target creature to its owner's hand, then surveil 1.

Look at the top two cards of your library. Put one into your hand and the other into your graveyard.
Surface {2}{U}

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.

Ward {2}
Amity — Whenever Surging Mudskipper attacks, surveil 1. You may play that card from your graveyard this turn. If exactly one other creature attacked with it, this ability triggers three times instead.

Enchant creature
Once each turn, when enchanted creature becomes tapped, you may untap it or put a stun counter on it.

When Tenki enters, it acclimates.
You can't sacrifice Weather enchantments.
{W}{U}{B}{R}{G}, {T}: Tenki acclimates. This ability costs one mana of any color less to activate for each Weather you control.

Once each turn, when you activate a nonmana ability, you may have creatures your opponents control get -1/-0 until end of turn.
{2}: Unnerving Moth gains flying until end of turn.

Golems you control have ward {1}.
Unspeaking Titan can't attack or block unless you control three or more Golems.
Whenever Unspeaking Titan enters or attacks, tap up to one target creature and put a stun counter on it.
{3}, {T}: Create a 1/1 white Golem creature token.

Flying
Amity — Whenever you attack with Warden of Soul and exactly one other creature, search your library for a legendary or Dragon card, reveal it, put it into your hand, then shuffle.

You may cast this spell as though it had flash if you activated a nonmana ability this turn.
Target artifact or creature's owner puts it on their choice of the top or bottom of their library.

This spell can't be countered.
Trample
Surface {3}{U}{U}. Wrecking Whale surfaces tapped.

Flying
Amity — Whenever you attack with Zipping Lightningbug and exactly one other creature, target creature you don't control gets -2/-0 until end of turn.

Beloved Poppet can't be blocked by creatures with power 4 or greater.
Surface {4}{B}. This spell costs {3} less to cast if Beloved Poppet died this turn. Beloved Poppet surfaces transformed.

Abandoned Poppet can't be blocked by creatures with power 2 or less.
Whenever a creature an opponent controls dies, they lose 2 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.

Menace
Whenever Ship Shredder enters or you cast a spell from your graveyard, each opponent loses 2 life and you gain 2 life.

Destroy target creature. Create two Berry tokens.

Depths Ancient's power and toughness are each equal to the number of cards in your graveyard plus the number of exiled cards you own with surface.
Surface {5}{B}{B}

Landfall — Whenever a land you control enters, surveil 2.

As an additional cost to cast this spell, you may sacrifice an artifact.
Target creature gets -3/-3 until end of turn. If you've sacrificed a permanent this turn, that creature gets -5/-5 until end of turn instead.

When Falling Ashes enters, exile up to two target cards from graveyards, then you gain 2 life.