Mox Diamond [Stronghold] Urza's Destiny

Mox Diamond [Stronghold] Urza's DestinySet: Stronghold Type: Artifact Rarity: Rare Cost: {0} If Mox Diamond would enter the battlefield, you may discard a land card instead. If you do, put Mox Diamond onto the battlefield. If you don't, put it into its owner's graveyard. {T}: Add one mana of any color.

Set: Antiquities Type: Creature — Phyrexian Demon Rarity: Rare Cost: {4}{B}{B} Flying (This creature can't be blocked except by creatures with flying or reach

Put that card in your hand and exile all other cards revealed this way

Set: Shadowmoor Type: Enchantment Rarity: Rare Cost: {4}{W} If you would gain life

All efforts at eradication have proved futile

Set: Rise of the Eldrazi Type: Legendary Creature — Eldrazi Rarity: Mythic Cost: {10} When you cast this spell

"Fools dig for water

In just one night

Niv-Mizzet

If you control an Urza's Power-Plant and an Urza's Tower

Set: New Phyrexia Type: Legendary Creature — Phyrexian Praetor Rarity: Mythic Cost: {6}{G}{G} Trample

it gets +2/+2 until end of turn

−2: Chandra