Whenever a token you control enters, put a +1/+1, flying, haste, trample, vigilance, or loyalty counter on a permanent you control other than Simul.
[+1]: Create a 1/1 green Plant creature token.
[–2]: Create a blue Aura enchantment token with enchant permanent and “When enchanted permanent dies, you draw two cards.”
[–5]: Create a 3/3 green, blue, and red Dragon creature token with flying. For each kind of counter on permanents you control, you may put a counter of that kind on it.

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.

{T}: Add {C}.
{3}, {T}: Create a 1/1 white Golem creature token. Spend mana of three different colors to activate this ability.
{T}: Put a +1/+1 counter on target creature. It gains flying until end of turn. Activate only as a sorcery and only if you control ten or more permanents.

Once each turn, when Smart Shopper enters or you cast a creature spell, you may create a Berry token. If three or more types of mana were spent to cast it, create two of those tokens instead.

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

Equipped creature gets +1/+1.
As long as equipped creature was activated this turn, it gets an additional +2/+2 and can attack as though it were untapped.
Equip {2}

Haste
Amity — Whenever you attack with Solid Smog and exactly one other creature, you may pay {R}. If you do, transform Solid Smog.

When Soothing Singer enters, exile target nonland permanent you don't control until Soothing Singer leaves the battlefield.
{1}{W}: Soothing Singer gets +0/+2 until end of turn.

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

As an additional cost to cast this spell, exile two permanent cards from your graveyard.
Whenever Spikey, Jack's Gravetiller deals combat damage to a player, return a card exiled with it to its owner's hand.
You may cast Spikey from your graveyard.

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.

Menace
Amity — Whenever you attack with Splitting Smog and exactly one other creature, you may pay {1}{R}. If you do, attacking creatures you control get +2/+0 until end of turn.

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.

Menace
Surface {3}{B}{B}

First strike
Landfall — Whenever a land you control enters, you may tap target creature.

Haste
Amity — Whenever you attack with Stitches and exactly one other creature, create a 2/2 Toy artifact creature token with defender, then tap all Toys you control. They're attacking.
At the beginning of your end step, if you didn't create a Toy this turn, transform Stitches.

Trample
Amity — Whenever you attack with Stitches, Orphaned and exactly one other creature, transform Stitches at the beginning of the next turn's upkeep.

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.

Flying
When Stratus Fledgling enters, it acclimates.
Weather spells you cast cost {1} less to cast.

When Streaking Sunrise enters, scry 1, then exile the top card of your library. You may play it until the end of your next turn.

Stunning Cascade enters tapped.
{T}: Add {U} or {R}.
{2}{U}{R}, {T}, Sacrifice Stunning Cascade: Draw a card.

When Suncaller Tortoise enters, return any number of lands you control to their owner's hand.
Landfall — When a land you control enters, Suncaller Tortoise deals 2 damage to target player. If it's a Mountain, it deals 3 damage instead. If it's a Plains, you gain life equal to the damage dealt. If it's a Swamp, that player discards a card.

Sunlit Ruins enters tapped unless you control a Swamp.
{T}: Add {G} or {W}.

Whenever you attack, Sunny Day deals X damage to target player or planeswalker, where X is the number of attacking creatures.

{T}: Add one mana of any color.
Amity — Whenever you attack with Sunsoaker and exactly one other creature, put a +1/+1 counter on Sunsoaker and add one mana of any color. Until end of turn, you don't lose that mana as steps and phases end.