Nabi, Savior of Mirrodin

Myriad
Protection from Phyrexian
Creatures your opponents control lose toxic
and infect
Whenever a Myr enters the battlefield amass
Myr (Put a +1/+1 counter on a Myr
Army you control. If you don't control an Myr
Army, create a 0/0 colorless Myr Army creature token first.)