Warriors of Alavna by N. M. Browne.

Warriors of Alavna is just an amazing book. Two kids go back in time on an adventure where one finds out he is an amazing warrior, and the other a magician! I highly recommend this book.

52:12 The Necromancer by Michael scott.

The fourth book in the series. It continues to be very fast paced, and introduces newer characters, as well as a mysterious one, and something quite extraordinary. This series is a must read.