La saga d'Urza

Whenever Karn, Silver Golem blocks or becomes blocked, it gets -4/+4 until end of turn. {1}: Target noncreature artifact becomes an artifact creatu...

If a source would deal damage to you, prevent 1 of that damage.

At the beginning of each player's upkeep, that player returns a permanent they control to its owner's hand unless they pay 2 life.

At the beginning of your upkeep, Purging Scythe deals 2 damage to the creature with the least toughness. If two or more creatures are tied for leas...

As Phyrexian Processor enters the battlefield, pay any amount of life. {4}, {T}: Create an X/X black Minion creature token, where X is the life pai...

{X}, {T}: Tap X target lands.

When a spell or ability an opponent controls causes you to discard Metrognome, create four 1/1 colorless Gnome artifact creature tokens. {4}, {T}: ...

{3}, {T}: Put a +1/+1 counter on target creature.

{X}: Chimeric Staff becomes an X/X Construct artifact creature until end of turn.

At the beginning of your upkeep, you may put a page counter on Barrin's Codex. {4}, {T}, Sacrifice Barrin's Codex: Draw X cards, where X is the num...

{3}, {T}, Sacrifice Crystal Chimes: Return all enchantment cards from your graveyard to your hand.

Worn Powerstone enters the battlefield tapped. {T}: Add {C}{C}.

Wirecat can't attack or block if an enchantment is on the battlefield.

{3}: Each player puts the top two cards of their library into their graveyard.

Defender (This creature can't attack.) When Wall of Junk blocks, return it to its owner's hand at end of combat. (Return it only if it's on the bat...

{1}, {T}: Untap target artifact.

At the beginning of your upkeep, you may add {C}{C}. You can't spend this mana to cast spells.

{5}, {T}: Shuffle your library, then reveal the top card. Until end of turn, for as long as that card remains on top of your library, play with the...

At the beginning of your upkeep, you may put a soot counter on Smokestack. At the beginning of each player's upkeep, that player sacrifices a perma...

{2}, {T}, Sacrifice Pit Trap: Destroy target attacking creature without flying. It can't be regenerated.

Phyrexian Colossus doesn't untap during your untap step. Pay 8 life: Untap Phyrexian Colossus. Phyrexian Colossus can't be blocked except by three ...

At the beginning of each player's upkeep, return to its owner's hand each creature that player controls with power greater than the number of cards...

Defender (This creature can't attack.) {3}: Mobile Fort gets +3/-1 until end of turn and can attack this turn as though it didn't have defender. Ac...

At the beginning of your upkeep, you may put a petal counter on Lotus Blossom. {T}, Sacrifice Lotus Blossom: Add X mana of any one color, where X i...