Dong Hua, Emperor

Indestructible.
As long as your devotion to red and white is
less than thirteen and you do not control an
artifact, Dong Hua isn't a creature and may
not activate abilities.
{t} Destroy target creature or planeswalker.
Sacrifice Dong Hua, counter target spell
and/or ability. At the beginning of your next
upkeep, return Dong Hua to the battlefield as
a 0/1 creature with no abilities.