Mana Short

Tap all lands target player controls and that player loses all unspent mana.

Tundra

Jayemdae Tome

Feldon's Cane

{T}, Exile Feldon's Cane: Shuffle your graveyard into your library.

Balance

Each player chooses a number of lands they control equal to the number of lands controlled by the player who controls the fewest, then sacrifices the rest. Players discard cards and sacrifice creatures the same way.

Phantasmal Terrain

Enchant land
As Phantasmal Terrain enters the battlefield, choose a basic land type.
Enchanted land is the chosen type.

Disenchant

Flood

{U}{U}: Tap target creature without flying.

Serra Angel

Spell Blast

Counter target spell with mana value X. (For example, if that spell's mana cost is {3}{U}{U}, X is 5.)

Plains

Divine Offering

Destroy target artifact. You gain life equal to its mana value.

Braingeyser

Control Magic

Enchant creature
You control enchanted creature.

Counterspell

Alabaster Potion

Choose one —
• Target player gains X life.
• Prevent the next X damage that would be dealt to any target this turn.

Wrath of God

Destroy all creatures. They can't be regenerated.

Boomerang

Return target permanent to its owner's hand.

Swords to Plowshares

Exile target creature. Its controller gains life equal to its power.

Recall

Discard X cards, then return a card from your graveyard to your hand for each card discarded this way. Exile Recall.

Mahamoti Djinn

Flying (This creature can't be blocked except by creatures with flying or reach.)

Time Elemental

When Time Elemental attacks or blocks, at end of combat, sacrifice it and it deals 5 damage to you.
{2}{U}{U}, {T}: Return target permanent that isn't enchanted to its owner's hand.

Stasis

Players skip their untap steps.
At the beginning of your upkeep, sacrifice Stasis unless you pay {U}.

Fellwar Stone

{T}: Add one mana of any color that a land an opponent controls could produce.

Mishra's Factory

{T}: Add {C}.
{1}: Mishra's Factory becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land.
{T}: Target Assembly-Worker creature gets +1/+1 until end of turn.

Fireball

This spell costs {1} more to cast for each target beyond the first.
Fireball deals X damage divided evenly, rounded down, among any number of targets.