Rukarumel, Biologist

As Rukarumel enters, choose a creature type.
Slivers you control and nontoken creatures you control are the chosen type in addition to their other creature types. The same is true for creature spells you control and creature cards you own that aren’t on the battlefield.
, : Create a 1/1 colorless Sliver creature token.

Raise the Palisade

Choose a creature type. Return all creatures that aren’t of the chosen type to their owners’ hands.

Beast Within

Destroy target permanent. Its controller creates a 3/3 green Beast creature token.

Crib Swap

Changeling (This card is every creature type.)
Exile target creature. Its controller creates a 1/1 colorless Shapeshifter creature token with changeling.

Dragon Typhoon

Whenever you cast a Dragon or noncreature spell, draft a card from Dragon Typhoon’s spellbook and put it onto the battlefield.
Channel — , Discard this card: Create a 4/4 red Dragon creature token with flying.

Desert Cenote

If you were the starting player, this land enters tapped.
As this land enters, choose up to two colors from among cards in your hand.
: Add .
: Add one mana of a chosen color.

Xho Cai, Flickering Talon

Flying, Vigilance, Haste
When Xho Cai enters, the next noncreature spell you cast costs less to cast.
Flurry — Whenever you cast your second spell each turn, exile up to one target creature you control, then return it to the battlefield under its owner’s control.

Sibsig’s Artisan

Renew — , Exile this card from your graveyard: Put three +1/+1 counters on target creature you control. It perpetually gains this ability. Activate only as a sorcery.

Call the Crash

Suspend 2—
Conjure two cards named Siege Rhino onto the battlefield.

Swiftspear’s Teachings

You get a one-time boon with “When you cast a creature spell, it gains prowess and haste.”
Draw a card.

Waystone’s Guidance

Attacking tokens you control get +1/+0.
Whenever you cast your first creature spell each turn, that spell gains mobilize 2.

Audacious Knuckleblade

Exhaust — : Seek a card named Audacious Knuckleblade and put it onto the battlefield tapped.
Exhaust — : Surveil 2, then untap this creature.
Exhaust — : Creatures you control gain haste until end of turn.

Illuminating Lash

Illuminating Lash deals 3 damage to any target.
You get a one-time boon with “When you cast a noncreature spell, draw a card.”

Hamza, Might of the Yathan

Whenever a creature you control is turned face up, it endures X, where X is that creature’s toughness.
Landfall — Whenever a land you control enters, seek a creature card and manifest it.

Ureni’s Counsel

This spell costs less to cast for each Dragon card in your library.
Seek a Dragon card.
Harmonize

Mardu Thunderkite

Flying
Mobilize 2
When this creature enters, creatures you control perpetually gain your choice of menace, lifelink, or haste.

Dragonweave Tapestry

When this artifact enters, conjure Dragonweave Tapestry’s spellbook into your library twice, then shuffle.
Whenever you cast a Dragon or Omen spell, draw a card.
: Add one mana of any color.

Dragonsoul Prodigy

Whenever you cast your first Omen spell each turn, conjure a duplicate of that card onto the battlefield. It gains haste. At the beginning of the next end step, shuffle it into its owner’s library.

Hardened Bonds

Whenever a +1/+1 counter is put on a creature you control, seek a creature card. That card perpetually gets +1/+1. This ability triggers only once each turn.