May 13 (Reuters) - Mag Silver Corp MAG.TO :
* Mag Silver Corp says adopts new shareholder rights plan
to replace existing rights plan
* Mag Silver Corp says existing shareholder rights plan
will remain in place until conclusion of Mag's upcoming meeting
of shareholders
* Mag Silver Corp sets trigger at 20%
Source text for Eikon: ID:nCCN8xHb9N
Further company coverage: MAG.TO
(Bengaluru Newsroom: +1 646 223 8780)