Whenever you cast a colorless spell, you may pay {C}. If you do, copy it. You may choose new targets for the copy.
Whenever a creature you control attacks, put a +1/+1 counter on it for each other creature you control with the same name as that creature.

Whenever another creature dies, you may integrate it.
Whenever a creature card is integrated onto Unmolded One, you may have it become a copy of that card until end of turn, except it has Unmolded One's abilities.

Once each turn, when you activate a nonmana ability, you may have creatures your opponents control get -1/-0 until end of turn.
{2}: Unnerving Moth gains flying until end of turn.

Untap any number of target creatures. They gain flying and protection from noncreatures until end of turn.

Golems you control without ward have ward {1}.
Unspeaking Titan can't attack or block unless you control three or more Golems.
Whenever Unspeaking Titan enters or attacks, tap up to one target creature and put a stun counter on it.
{3}, {T}: Create a 1/1 white Golem creature token.

Unstable Formation enters with three charge counters on it.
{1}, {T}, Remove a charge counter from Unstable Formation: Unstable Formation deals 1 damage to target player or planeswalker. You may sacrifice Unstable Formation. If you do, draw a card.

When this creature enters, cache up to X target cards from your graveyard.
{T}: Add {G}. Spend this mana only to activate abilities of Memories.

{T}: Add {C}.
Whenever Unwavering Gates attacks, other creatures you control gain indestructible until end of turn.
Spellcharge 5

Golems you control have menace.
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 nonland card from their hand or graveyard.
{3}, {T}: Create a 1/1 white Golem creature token.

Approval — {3}, {T}, Discard a card: Draw a card. This ability costs {X} less to activate, where X is the number of colors among permanents you control.

Untap all creatures you control. They get +2/+1 until end of turn.
Cycling {2}

{2}{B}, {T}: Target opponent loses 2 life.
{6}{B}{B}, {T}: Target opponent loses 5 life.

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.

As this land enters, you may pay 2 life. If you don't, it enters tapped.
{T}: Add {R} or {G}.

Urban Sunscape enters tapped.
{T}: Add {R} or {W}.
{4}: Make a pledge. Activate only as a sorcery.

Double strike
Whenever Urban Twinmotors deals combat damage to a player, untap up to one target permanent.

When Ursine Advocate enters, create a 2/2 green Bear creature token.

Flying
When this creature enters, return up to two target creature cards each with mana value 2 or less from your graveyard to the battlefield.

Whenever you gain control of a permanent you don't own or a permanent you don't own enters under your control, put a +1/+1 counter on Vagrant Sorceress.

Distribute three +1/+1 counters among up to three target creatures.

Valley Caravan's power and toughness are each equal to the number of creatures you control.
Wander {3}{W}{W}
When Valley Caravan enters, if it wandered, create a 1/1 white Human creature token.

Valley Village enters tapped.
{T}: Add {R} or {G}.
{1}, Discard Valley Village: Scry 2.

Menace
Solidarity

Spellcharge 2
When Vanquished Conqueror dies, draw a card.

Equipped creature gets +2/+2.
Equip {2}
Spellcharge 4