Sans the Skeleton

Sans has hexproof as long as he is untapped.
Whenever a nontoken creature you contol dies,
put a charge counter on Sans.
{u}, {t}: Tap or untap target permanant.
{x}{x}{u}, {ut}: Create X colorless Gaster Blaster
artifact tokens. Acivate this ability only if there
are 5 or more charge counters on Sans.