Mana Drain

Counter target spell. At the beginning of your next main phase, add an amount of {C} equal to that spell's mana value.

Sylvan Library

At the beginning of your draw step, you may draw two additional cards. If you do, choose two cards in your hand drawn this turn. For each of those cards, pay 4 life or put the card on top of your library.

Jayemdae Tome

Tundra

Regrowth

Return target card from your graveyard to your hand.

Mishra's Factory

{T}: Add {C}.
{1}: This land 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.

Tropical Island

Volcanic Island

Time Walk

Fellwar Stone

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

Underground Sea

Mox Ruby

Ancestral Recall

Disenchant

Wrath of God

Destroy all creatures. They can't be regenerated.

Timetwister

Each player shuffles their hand and graveyard into their library, then draws seven cards. (Then put Timetwister into its owner's graveyard.)

Serra Angel

Flying
Vigilance (Attacking doesn't cause this creature to tap.)

Mox Jet

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.

Counterspell

Mox Pearl

Strip Mine

{T}: Add {C}.
{T}, Sacrifice this land: Destroy target land.

Swords to Plowshares

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

Demonic Tutor

Search your library for a card, put that card into your hand, then shuffle.

Mind Twist

Target player discards X cards at random.