Demonic Tutor

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

Maze of Ith

{T}: Untap target attacking creature. Prevent all combat damage that would be dealt to and dealt by that creature this turn.

Bayou

Sol Ring

Serendib Efreet

Flying
At the beginning of your upkeep, Serendib Efreet deals 1 damage to you.

Scavenger Folk

{G}, {T}, Sacrifice Scavenger Folk: Destroy target artifact.

Energy Flux

All artifacts have "At the beginning of your upkeep, sacrifice this artifact unless you pay {2}."

Island

Pendelhaven

{T}: Add {G}.
{T}: Target 1/1 creature gets +1/+2 until end of turn.

Timetwister

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

Ancestral Recall

Counterspell

Elves of Deep Shadow

{T}: Add {B}. Elves of Deep Shadow deals 1 damage to you.

Birds of Paradise

Berserk

Cast this spell only before the combat damage step.
Target creature gains trample and gets +X/+0 until end of turn, where X is its power. At the beginning of the next end step, destroy that creature if it attacked this turn.

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.

Fallen Angel

Flying
Sacrifice a creature: Fallen Angel gets +2/+1 until end of turn.

Mind Twist

Target player discards X cards at random.

Psionic Blast

Psionic Blast deals 4 damage to any target and 2 damage to you.

Underground Sea

Mox Emerald

Library of Alexandria

{T}: Add {C}.
{T}: Draw a card. Activate only if you have exactly seven cards in hand.

Llanowar Elves

Blue Elemental Blast

Choose one —
• Counter target red spell.
• Destroy target red permanent.

Merfolk of the Pearl Trident

Erhnam Djinn

At the beginning of your upkeep, target non-Wall creature an opponent controls gains forestwalk until your next upkeep. (It can't be blocked as long as defending player controls a Forest.)

Regrowth

Return target card from your graveyard to your hand.

Giant Growth

Target creature gets +3/+3 until end of turn.

Mox Jet

Gloom

White spells cost {3} more to cast.
Activated abilities of white enchantments cost {3} more to activate.

City of Brass

Whenever City of Brass becomes tapped, it deals 1 damage to you.
{T}: Add one mana of any color.

Shanodin Dryads

Forestwalk (This creature can't be blocked as long as defending player controls a Forest.)

Time Walk

Ashnod's Transmogrant

{T}, Sacrifice Ashnod's Transmogrant: Put a +1/+1 counter on target nonartifact creature. That creature becomes an artifact in addition to its other types.

Tropical Island

Tranquility

Strip Mine

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

Mox Sapphire

Control Magic

Enchant creature
You control enchanted creature.

Lord of Atlantis

Other Merfolk get +1/+1 and have islandwalk. (They can't be blocked as long as defending player controls an Island.)