Here is another exciting blue-red card with double effect. Guildmage can repeatedly draw you cards and create copies of your spells. Its only weakness is that it's not very tough so it's going to be very easy to remove.
The second ability also works like a counterspell. Imagine that you're casting a removal, which gets countered by your opponent, and then you activate the second ability of the Guildmage to copy your removal. It's a really flexible card that will be seen in most Izzet decks.