La saga d'Urza

Return Attunement to its owner's hand: Draw three cards, then discard four cards.

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

At the beginning of your upkeep, if you have a card in hand, return Imaginary Pet to its owner's hand.

Serra Avatar's power and toughness are each equal to your life total. When Serra Avatar is put into a graveyard from anywhere, shuffle it into its ...

{W}: The next time a land source of your choice would deal damage to you this turn, prevent that damage. Cycling {2} ({2}, Discard this card: Draw ...

Flying At the beginning of your upkeep, sacrifice Drifting Djinn unless you pay {1}{U}. Cycling {2} ({2}, Discard this card: Draw a card.)

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.

Return all basic land cards from all graveyards to the battlefield tapped under their owners' control.

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}: ...

{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...

Whenever an opponent plays a land, if Hidden Stag is an enchantment, Hidden Stag becomes a 3/2 Elk Beast creature. Whenever you play a land, if Hid...

When an opponent casts a creature spell, if Opal Titan is an enchantment, Opal Titan becomes a 4/4 Giant creature with protection from each of that...

At the beginning of each player's upkeep, if that player controls more lands than each other player, the player creates a 1/1 green Saproling creat...

Each player sacrifices four lands. Wildfire deals 4 damage to each creature.

{R}: Flip a coin. If you win the flip, return Viashino Sandswimmer to its owner's hand. If you lose the flip, sacrifice Viashino Sandswimmer.

If a red spell would deal damage to a permanent or player, it deals that much damage plus 1 to that permanent or player instead.

Flying (This creature can't be blocked except by creatures with flying or reach.) {1}{R}: Shivan Hellkite deals 1 damage to any target.

Flying Echo {2}{R}{R} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unles...

Echo {4}{R}{R} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you p...

At the beginning of your upkeep, Bulwark deals X damage to target opponent, where X is the number of cards in your hand minus the number of cards i...