There are 5 5-letter words that start with 'mag'.
| mages | magic | magma | magot | magus | 
Note: These 5 5-letter words that start with 'mag' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with magn, magi, maga, magd, mage, magm, magg, magu, magl, mago, magp, mags.
4-letter words start with 'mag' (3)