Heth, Visier of Osirmeth

{1}{w/b}, {t}: Tap target creature without a sand counter on it and put a sand counter on it.
Creatures with sand counters on them doesn't untap during their controller's untap step.
When Heth, Visier of Osirmeth dies, Remove all sand counters from all creatures, then draw a
card for each counter removed this way.