Urza's Saga

When an opponent casts a spell, if Veil of Birds is an enchantment, Veil of Birds becomes a 1/1 Bird creature with flying.

{T}: Counter target spell unless its controller pays {1}.

Return all green permanents to their owners' hands.

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

When an opponent casts a spell, if Veiled Serpent is an enchantment, Veiled Serpent becomes a 4/4 Serpent creature with "This creature can't attack...

Return all lands to their owners' hands.

Return target permanent to its owner's hand. Cycling {2} ({2}, Discard this card: Draw a card.)

Target player draws X cards.

When a player has no cards in hand, if Veiled Crocodile is an enchantment, Veiled Crocodile becomes a 4/4 Crocodile creature.

Counter target spell unless its controller pays {X}. If that player doesn't, they tap all lands with mana abilities they control and lose all unspe...

Enchant creature Enchanted creature gets +2/+2 and has flying and shroud. (It can't be the target of spells or abilities.)

Enchant creature Enchanted creature can't be blocked.

{T}: Return Wizard Mentor and target creature you control to their owner's hand.

Draw two cards, then discard a card.

Attach target Aura attached to a creature or land to another permanent of that type.

Flying When Spire Owl enters the battlefield, look at the top four cards of your library, then put them back in any order.

Enchant enchantment At the beginning of the upkeep of enchanted enchantment's controller, that player loses 2 life unless they pay {2}. Cycling {2}...

Enchant creature Enchanted creature has "{T}: This creature deals 1 damage to any target."

{1}{U}: Counter target red spell.

Cycling {2} ({2}, Discard this card: Draw a card.)

Flying Cycling {2} ({2}, Discard this card: Draw a card.)

Enchant creature Enchanted creature has "At the beginning of your upkeep, sacrifice this creature unless you pay its mana cost."

Enchant creature Enchanted creature has flying. When Launch is put into a graveyard from the battlefield, return Launch to its owner's hand.

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