Power Sink

Counter target spell unless its controller pays {X}. If that player doesn't, they tap all lands with mana abilities they control and lose all unspent mana.

Ivory Tower

At the beginning of your upkeep, you gain X life, where X is the number of cards in your hand minus 4.

Tundra

Mox Pearl

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.

Moat

Mox Ruby

Timetwister

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

Black Lotus

{T}, Sacrifice this artifact: Add three mana of any one color.

Plains

Ancestral Recall

Control Magic

Enchant creature
You control enchanted creature.

Counterspell

Island

City of Brass

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

Sol Ring

Serra Angel

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

Disenchant

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Mind Twist

Target player discards X cards at random.

Regrowth

Return target card from your graveyard to your hand.

Mox Jet

Land Tax

At the beginning of your upkeep, if an opponent controls more lands than you, you may search your library for up to three basic land cards, reveal them, put them into your hand, then shuffle.

Feldon's Cane

{T}, Exile this artifact: Shuffle your graveyard into your library.

Amnesia

Target player reveals their hand and discards all nonland cards.

Time Walk

Wrath of God

Destroy all creatures. They can't be regenerated.

Mox Sapphire

Braingeyser

Library of Alexandria

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

Contract from Below

Remove Contract from Below from your deck before playing if you're not playing for ante.
Discard your hand, ante the top card of your library, then draw seven cards.

Spirit Link

Enchant creature (Target a creature as you cast this. This card enters attached to that creature.)
Whenever enchanted creature deals damage, you gain that much life.