Liquimetal Phoenix

Flying, haste
When Liquimetal Phoenix dies, you may pay {c}{c}{c} and exile it. If you do, exile all
nonartifact creatures. Otherwise, return it to the battlefield under its owner's control at the
beginning of the next end step and you skip your
next beginning phase.
{c}, {t}: Target nonartifact creature becomes an
artifact in addition to its other types.