Sphinx's Herald [Shards of Alara]

Sphinx's Herald [Shards of Alara]Set: Shards of Alara Type: Artifact Creature Vedalken Wizard Rarity: Uncommon Cost: {U} {2}{U}, {T}, Sacrifice a white creature, a blue creature, and a black creature: Search your library for a card named Sphinx Sovereign, put it onto the battlefield, then shuffle. He calls a riddle through the gaps of cloven clouds, hoping for an answer.

you may prevent X of that damage

That creature can block up to two additional creatures this turn

Set: Fate Reforged Prerelease Promos Type: Creature — Human Warrior Rarity: Rare Cost: {2}{B} Whenever Mardu Strike Leader attacks

After Kroog was destroyed while most of its defenders were at his side

Cunning Type: Creature — Angel Rarity: Rare Cost: {1}{U}{R}{W} Flying

Set: Classic Sixth Edition Type: Enchantment Rarity: Uncommon Cost: {B} White creatures get -1/-1

While Dominarians fought for their world

Set: Urza's Legacy Type: Instant Rarity: Uncommon Cost: {2}{R} Destroy two target artifacts

I predict we will soon see the true measure of darkness

detain each nonland permanent your opponents control with mana value 4 or less

Set: Dragon's Maze Type: Creature — Elemental Rarity: Rare Cost: {3}{W}{W} When Scion of Vitu-Ghazi enters the battlefield

sacrifice Second Chance and take an extra turn after this one