Furnace Engine

{p/r} sacrifice a creature, add a rotation counter
to target basic land you control.
{p/r} sacrifice a land, add a rotation counter
to target basic land you control.
{t}, Remove all rotation counters from target land
you control, it becomes a X/X artifact creature
that's still a land where X is the amount of rotation counters you removed.
You may only activate this as a sorcery.