Bouncing Beebles

This creature can't be blocked as long as defending player controls an artifact.

Cloud of Faeries

Flying
When this creature enters, untap up to two lands.
Cycling {2} ({2}, Discard this card: Draw a card.)

Burst of Energy

Delusions of Mediocrity

When this enchantment enters, you gain 10 life.
When this enchantment leaves the battlefield, you lose 10 life.

Fleeting Image

Flying (This creature can't be blocked except by creatures with flying or reach.)
{1}{U}: Return this creature to its owner's hand.

Frantic Search

Draw two cards, then discard two cards. Untap up to three lands.

Intervene

Counter target spell that targets a creature.

King Crab

{1}{U}, {T}: Put target green creature on top of its owner's library.

Levitation

Miscalculation

Counter target spell unless its controller pays {2}.
Cycling {2} ({2}, Discard this card: Draw a card.)

Opportunity

Palinchron

Flying
When this creature enters, untap up to seven lands.
{2}{U}{U}: Return this creature to its owner's hand.

Raven Familiar

Flying
Echo {2}{U} (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.)
When this creature enters, look at the top three cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.

Cessation

Enchant creature
Enchanted creature can't attack.
When this Aura is put into a graveyard from the battlefield, return it to its owner's hand.

Rebuild

Return all artifacts to their owners' hands.
Cycling {2} ({2}, Discard this card: Draw a card.)

Second Chance

At the beginning of your upkeep, if you have 5 or less life, sacrifice this enchantment and take an extra turn after this one.

Urza's Legacy