When Lady of the Mists enters, you may pay 2 life. If you do, it acclimates.
As long as you control a Weather, Lady of the Mists gets +0/+2.

Menace
{4}{B}{B}: Transform Maw Impostor.

Menace
Whenever Imposing Maw deals combat damage to a player, that player loses 3 life unless they discard a card.

Landfall — Whenever a land you control enters, you gain 2 life. Then if you control a Mountain and a Plains, each opponent loses 2 life.

Target creature gets -3/-3 until end of turn.
Surface {5}{B}

You draw two cards, lose 2 life, and mill two cards.

When Pathetic Cocoon enters or dies, create a Berry token.

Flying, haste
Landfall — Whenever a land you control enters, put a +1/+1 counter on Pressuring Ghoul unless any opponent discards a card.

Menace
When Reaper of the Deep enters, mill two cards. You may repeat this process until there are seven or more cards in your graveyard.
Surface {5}{B}{B}

Flying
Surface {2}{B}{B}. This spell costs {2}{B}{B} less if you control a creature named Relentless Bats.
A deck can have any number of cards named Relentless Bats.

Whenever you attack, defending player loses 2 life and you gain 2 life.

Deathtouch
Landfall — Whenever a land you control enters, Sandstorm Dancer acclimates.

{B}, Sacrifice Serrated Fossil: Choose a nonland card name. Target player reveals their hand and discards a card with that name if able. Activate only as a sorcery.
Surface {3}{B}{B}. Serrated Fossil surfaces transformed.

Ward—Discard a card.
Whenever Reborn Fisher attacks, choose a nonland card name, then defending player reveals their hand and discards a card with that name if able.

When Shadow Sky enters and whenever you cast a spell, each creature target player controls gets -1/-1 until end of turn.

Landfall — Whenever Sifting Through Soot or a land you control enters, you gain 2 life and put a soot counter on Sifting Through Soot.
{B}, Remove two soot counters from Sifting Through Soot: Target player loses 2 life.
{3}{B}, Remove five soot counters from Sifting Through Soot: Return target artifact or creature card from your graveyard to the battlefield.

Exile target creature or enchantment if its mana value is less than or equal to the number of spells named Singularity you've cast this game.

When Smiling Sludge enters, create a Berry token.
Whenever you sacrifice a nonland permanent, target opponent loses 1 life and you gain 1 life.

Flying
When Soul's Sunset enters, exile up to two target cards from graveyards. You gain 2 life.
Surface {4}{B}{B}

Menace
Surface {3}{B}{B}

Destroy target non-Human creature. If it has Berries attached to it, gain control of them. Otherwise, create a Berry token.

Golems you control have deathtouch.
Unyielding Titan can't attack or block unless you control three or more Golems.
Whenever Unyielding Titan enters or attacks, target opponent reveals their hand. Exile a card from their hand or graveyard.
{3}, {T}: Create a 1/1 white Golem creature token.

When Urban Explorer enters, return a permanent card with mana value 1 or less from your graveyard to your hand.
Landfall — Whenever a land you control enters, Urban Explorer gets +2/+1 until end of turn.

Mill two cards, then return a creature card from your graveyard to your hand.
Surface {3}{B}

Landfall — Whenever a land you control enters, each opponent loses 1 life.