Nuke

Nuke enters the battlefield tapped, it
doesn't untap during upkeep. This cannot
be countered.
{r}{r}, {ut}: (This ability can only be activated
if you control a creature with flying) Sacrifice Nuke,
put 1 Atomic Holocaust token onto the
battlefield. This cannot be countered.
"We thus drift toward unparalleled catastrophe."
—Albert Einstein