Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Chain Reaction

Chain Reaction deals X damage to each creature, where X is the number of creatures on the battlefield.

Furnace of Rath

If a source would deal damage to a permanent or player, it deals double that damage to that permanent or player instead.

Staff of the Flame Magus

Whenever you cast a red spell or a Mountain you control enters, you gain 1 life.

Time Warp

Target player takes an extra turn after this one.

Ruby Medallion

Red spells you cast cost {1} less to cast.

Electrickery

Electrickery deals 1 damage to target creature you don't control.
Overload {1}{R} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Island

Sapphire Medallion

Blue spells you cast cost {1} less to cast.

Counterspell

The Magic Mirror

This spell costs {1} less to cast for each instant and sorcery card in your graveyard.
You have no maximum hand size.
At the beginning of your upkeep, put a knowledge counter on The Magic Mirror, then draw a card for each knowledge counter on The Magic Mirror.

Control Magic

Enchant creature
You control enchanted creature.

Pyroclasm

Pyroclasm deals 2 damage to each creature.

Burning Wish

You may reveal a sorcery card you own from outside the game and put it into your hand. Exile Burning Wish.

Mountain

Overburden

Whenever a player puts a nontoken creature onto the battlefield, that player returns a land they control to its owner's hand.

Aether Flash

Whenever a creature enters, Aether Flash deals 2 damage to it.

Abrade

Choose one —
• Abrade deals 3 damage to target creature.
• Destroy target artifact.

Archmage's Charm

Choose one —
• Counter target spell.
• Target player draws two cards.
• Gain control of target nonland permanent with mana value 1 or less.

Breaking of the Fellowship

Target creature an opponent controls deals damage equal to its power to another target creature that player controls. The Ring tempts you.

Lightning Strike

Lightning Strike deals 3 damage to any target.

Staff of the Mind Magus

Whenever you cast a blue spell or an Island you control enters, you gain 1 life.