Nimbus of Thought enters tapped.
{T}: Add {U} or {R}.
{4}{U/R}: Until end of turn, Nimbus of Thought becomes a 3/3 blue and red Elemental creature with “Whenever this creature becomes tapped, you may discard a card. If you do, draw a card.” It's still a land. This ability costs {X} less to activate, where X is your devotion to blue and red. Activate only once each turn.

Other creatures you control get +1/+1.
Whenever Nimomae attacks, create two 1/1 blue Bird creature tokens with flying.
The first noncreature spell you cast each turn costs {X} less to cast, where X is the number of tokens you control.

Trample
When this creature enters, double the number of +1/+1 counters on another target creature you control. Then for each counter on that creature, you may put a counter of that kind on this creature.

When Nocturne, Monstrous Krasis enters and at the beginning of your upkeep, put X +1/+1 counters on Nocturne, where X is the number of different kinds of counters on permanents you control.

Nykthos, Architect of Gods has indestructible as long as you control at least three Shrines.
Whenever Nykthos attacks, you may pay {W}{U}{B}{R}{G}. If you do, search your library for a Shrine or legendary land card, put it onto the battlefield, then shuffle.

If you would add mana of a color to your mana pool, you may instead add an amount equal to your devotion to that color instead.

At the beginning of your upkeep, integrate the top card of target player's library.
Whenever a creature card is integrated onto Offerings to Sky Gods, create a 1/1 colorless Cyborg artifact creature token.

Flying, lifelink, haste
This creature can't block.
When this creature enters, if it was cast, create a red and white Subroutine enchantment token named OVERFLOW with “Whenever this Subroutine runs, return a card named Offset Daemon from your graveyard to the battlefield.”

During your turn, you may play cards from your graveyard but not from anywhere else.
Whenever you cast an instant or sorcery spell, exile that card instead of putting it into your graveyard as it resolves.
If another permanent you control would be put into your graveyard, exile it instead.

Trample
Amity — Whenever Old-Growth Gecko attacks, put a +1/+1 counter on another creature you control. If exactly one other creature attacked with it, this ability triggers three times instead.

Whenever you cast an instant or sorcery spell from your hand, cache it instead of putting it into your graveyard as it resolves.

Whenever you cast a multicolored spell, this creature deals 1 damage to each opponent and you gain 1 life.
When this creature dies, create a Treasure token.

Flash
When Omen of Slaughter enters, each opponent sacrifices a creature or planeswalker.
{2}{B}, Sacrifice Omen of Slaughter: Scry 2.

Your maximum hand size is zero.
Pay 1 life: Draw a card. Activate only as a sorcery.

Create a token that's a copy of target creature. It gains haste until end of turn. Sacrifice it at the beginning of the next end step.

Whenever Opal-Eye Allseer enters or you cast a noncreature spell, create a 1/1 white Bird creature token with flying.
Wander—{1}{U}, Exile two instant and/or sorcery cards from your graveyard.

When Opulent Roughrider enters or leaves the battlefield, surveil 1, then you may reveal the top card of your library. If that card has the same name as a permanent you control or a card in your graveyard, put it into your hand.
Wander {4}{U}{U}

Whenever you cast an instant or sorcery spell, Orbinoid gets +1/+1 and gains trample until end of turn.

Whenever another creature you control enters, if that creature's power is greater than this creature's power, you may put a +1/+1 counter on this creature.
{2}{G}: Move any number of +1/+1 counters from this creature to another target creature you control. Activate only as a sorcery.

Until end of turn, target creature you control gets +2/+2 and gains “Whenever this creature is dealt damage, you may have it fight target creature you don't control.” Then, it fights target creature you don't control.

Exile target creature or planeswalker. Its controller loses 2 life.

Counter target spell. That spell's controller reveals their hand. Choose any number of nonland cards from it. That player puts those cards on the bottom of their library in any order, then draws that many cards.

Create a 3/1 red Dinosaur creature token. When you do, pay for and choose any number.
+{G} — Put a trample counter on target creature you control.
+{U} — Put a +1/+1 counter on target creature you control.
+{R} — Put a haste counter on target creature you control.

Trample
Solidarity
{G}, Sacrifice an enchantment: Ozanwood Huntsman gets +2/+2 until end of turn.

When this Subroutine enters, you may discard a card. When you do, it deals 4 damage to target creature or planeswalker.
Whenever this Subroutine runs, create a 4/4 red Error creature token with menace.