Target opponent separates their creatures into two piles. Gain control of each creature from the pile of your choice until end of turn. Untap them. They get +1/+0 and gain trample and haste until end of turn.

Haste
When Summoning Swords enters, search your library for a creature card with mana value X or less, put it onto the battlefield, then shuffle.
Spellcharge 7

Flying
Favored
Whenever your Champion attacks, untap it.

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.

As an additional cost to cast this spell, sacrifice an artifact or creature.
Draw two cards.

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.

Supercharger enters with X charge counters on it.
{1}, {T}, Remove a charge counter from Supercharger: Put a +1/+1 counter on target creature. Activate only as a sorcery.

When this creature enters, cache the top card of your library face down.

When this creature enters, tap up to one target creature.
Flow — {3}{U}: Tap target creature.

Destroy target attacking or blocking creature with power 3 or greater.

Scry 3.
Create a 1/1 colorless Thopter artifact creature token with flying.

Deathtouch
Whenever Survivor of Pidae becomes the target of a spell you control, you may destroy target artifact or enchantment you don't control.

When Survivors of the New World enters, if it isn't a token, create two tokens that are copies of it.
When Survivors of the New World dies, reveal cards from the top of your library until you reveal a creature card. Put that card into your hand and the rest on the bottom of your library in a random order.

When Sustainable Investments enters, create a Treasure token.
Treasures you control have “{T}: Add one mana of any color.”

Target creature you control deals damage equal to its power to another target creature. When it deals excess damage this way, it deals damage equal to the excess to any target.

Target nonland permanent's owner puts it on the bottom of their library or just beneath the top X cards of their library, where X is the number of Memories you control.

Counter target spell unless its controller pays {X}. If they do, create an X/X blue and black Fish creature token.

Exile target creature or planeswalker an opponent controls. Its controller may draw a card unless they have more cards in hand than you.

Haste
Spellcharge 2

This spell has flash as long as you have at least 3 life more than your starting life total.
Flying

Flash
Flying
When Swooping Hunter enters, create a Berry token, then you may return another creature you control to its owner's hand.

When Synod of Sanctions enters, exile up to one target creature. For as long as that card remains exiled, its owner may cast it. A spell cast this way costs {1} more to cast.