Whenever Urborg Scavengers enters the battlefield or attacks, exile target card from a graveyard. Put a +1/+1 counter on Urborg Scavengers.

Urborg Scavengers has flying as long as a card exiled with it has flying. The same is true for first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, reach, trample, and vigilance.

Kicker <I>(You may pay an additional </I><I> as you cast this spell.)</I>

: Regenerate Urborg Skeleton.

If Urborg Skeleton was kicked, it enters the battlefield with a +1/+1 counter on it.

, , Discard a card: Each other player loses 2 life. You gain life equal to the life lost this way.

Destroy target Spirit or enchantment.

: Add .

Hexproof (This creature can't be the target of spells or abilities your opponents control.)

Uril, the Miststalker gets +2/+2 for each Aura attached to it.

When Uro enters the battlefield, sacrifice it unless it escaped.

Whenever Uro enters the battlefield or attacks, you gain 3 life and draw a card, then you may put a land card from your hand onto the battlefield.

Escape—, Exile five other cards from your graveyard. (You may cast this card from your graveyard for its escape cost.)

: Ursine Champion gets +3/+3 and becomes a Bear Berserker until end of turn. Activate only once each turn.

Whenever you cast a Myr spell, create a 1/1 colorless Myr artifact creature token.

At the beginning of combat on your turn, untap each Myr you control.

, : Put three +1/+1 counters on each Myr you control. Activate only during your turn.

Read ahead (Choose a chapter and start with that many lore counters. Add one after your draw step. Skipped chapters don't trigger. Sacrifice after III.)

I — Scry 4, then you may reveal the top card of your library. If a planeswalker card is revealed this way, put it into your hand.

II — You may put a planeswalker card with mana value 6 or less from your hand onto the battlefield.

III — You may activate the loyalty abilities of planeswalkers you control twice this turn rather than only once.

Affinity for artifact creatures (This spell costs less to cast for each artifact creature you control.)

Artifact creatures you control have menace.

At the beginning of your end step, create a 0/0 colorless Construct artifact creature token with "This creature gets +1/+1 for each artifact you control."

Artifact, instant, and sorcery spells you cast cost less to cast.

: If you both own and control Urza, Lord Protector and an artifact named The Mightstone and Weakstone, exile them, then meld them into Urza, Planeswalker. Activate only as a sorcery.

Vigilance

, : Draw a card, then discard a card.

Whenever you discard one or more artifact cards, create a tapped Powerstone token. This ability triggers only once each turn. (The token is an artifact with ": Add . This mana can't be spent to cast a nonartifact spell.")

: Urza's Avenger gets -1/-1 and gains your choice of banding, flying, first strike, or trample until end of turn. (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are blocking or being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

: Draw a card.

Whenever a player casts an artifact spell, you may pay . If you do, you gain 1 life.

Trample

: Urza's Engine gains banding until end of turn. (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are blocking or being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

: Attacking creatures banded with Urza's Engine gain trample until end of turn.

: Add .

: Add . Activate only once and only if you control an Urza's Mine, an Urza's Power-Plant, and an Urza's Tower.

, : Head to AskUrza.com and click Urza's Fun House.

Whenever an artifact you control is put into a graveyard from the battlefield, if it wasn't sacrificed, you may pay . If you do, draw a card.

Kicker (You may pay an additional as you cast this spell.)

This spell can't be countered.

Urza's Rage deals 3 damage to any target. If this spell was kicked, instead it deals 10 damage to that permanent or player and the damage can't be prevented.

: Roll a six-sided die. Urza's Science Fair Project gets the indicated result.

1 — It gets -2/-2 until end of turn.

2 — Prevent all combat damage it would deal this turn.

3 — It gains vigilance until end of turn.

4 — It gains first strike until end of turn.

5 — It gains flying until end of turn.

6 — It gets +2/+2 until end of turn.

, : Draw a card. Then discard a card unless you exile a historic card from your graveyard. (Artifacts, legendaries, and Sagas are historic.)

Boast — : Create a 1/1 white Human Warrior creature token. (Activate only if this creature attacked this turn and only once each turn.)

: Regenerate Uthden Troll.

: Add one mana of any color.

Flash

Enchant creature

Enchanted creature loses all abilities and has base power and toughness 1/1.

: Exile enchanted creature.

Flying

Utvara Scalper attacks each combat if able.

Flying

, Return two lands you control to their owner's hand: Copy target instant or sorcery spell. You may choose new targets for the copy.

Whenever you commit a crime, put a +1/+1 counter on Vadmir, New Blood. This ability triggers only once each turn. (Targeting opponents, anything they control, and/or cards in their graveyards is a crime.)

As long as Vadmir has four or more +1/+1 counters on it, it has menace and lifelink.

Mutate (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)

Flying, first strike

Whenever this creature mutates, you may cast target noncreature card with mana value 3 or less from your graveyard without paying its mana cost.

Flying

Whenever Vaevictis Asmadi, the Dire attacks, for each player, choose target permanent that player controls. Those players sacrifice those permanents. Each player who sacrificed a permanent this way reveals the top card of their library, then puts it onto the battlefield if it's a permanent card.

Put any number of cards from your hand on the bottom of your library, then draw that many cards plus one.

Whenever Valakut Fireboar attacks, switch its power and toughness until end of turn.

Landfall — Whenever a land enters the battlefield under your control, Valakut Predator gets +2/+2 until end of turn.

Valakut, the Molten Pinnacle enters the battlefield tapped.

Whenever a Mountain enters the battlefield under your control, if you control at least five other Mountains, you may have Valakut, the Molten Pinnacle deal 3 damage to any target.

: Add .

Menace, lifelink

If a nontoken creature an opponent controls would die, exile it instead. When you do, you may pay . If you do, create a 1/1 black and green Pest creature token with "When this creature dies, you gain 1 life."

Renown 2 (When this creature deals combat damage to a player, if it isn't renowned, put two +1/+1 counters on it and it becomes renowned.)

Whenever a creature you control becomes renowned, draw a card.

Roll two d6 and choose one result. Destroy each creature with power greater than or equal to that result. Then create a number of 2/2 white Knight creature tokens with vigilance equal to the other result.

Whenever you cycle another card for the first time each turn, create a 1/1 white Human Soldier creature token.

Cycling (, Discard this card: Draw a card.)

When Valki enters the battlefield, each opponent reveals their hand. For each opponent, exile a creature card they revealed this way until Valki leaves the battlefield.

: Choose a creature card exiled with Valki with mana value X. Valki becomes a copy of that card.

Flying, lifelink

At the beginning of each end step, if you gained 4 or more life this turn, create a 4/4 white Angel creature token with flying and vigilance.

Haste

Valley Dasher attacks each combat if able.

, Sacrifice a Mountain: Valleymaker deals 3 damage to target creature.

, Sacrifice a Forest: Choose a player. That player adds .

Enchant creature

Enchanted creature gets +1/+1.

When enchanted creature leaves the battlefield, create a 1/1 white Spirit creature token with flying.

White creatures get +2/+0 until end of turn.

Vigilance (Attacking doesn't cause this creature to tap.)

When Valorous Steed enters the battlefield, create a 2/2 white Knight creature token with vigilance.

Sacrifice a creature: Vampire Aristocrat gets +2/+2 until end of turn.

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

Assist (Another player can pay up to of this spell's cost.)

Flying

When Vampire Charmseeker enters the battlefield, return target instant, sorcery, or creature card from a graveyard to its owner's hand.

Flying

Whenever Vampire Envoy becomes tapped, you gain 1 life.