Plainsmountain Archeologist

As an extra cost to cast this spell, you must
control 4 or more artifacts. If you don't control
an artifact at any time when Plainsmountain Archeologist is on the battlefield, sacrifice it.
{w}, {t}: Target artifact you control has "{t}:
Target creature gets +7/-4 until end of turn."
{w}, {t}: Target equipment you control has
"Equipped creature gets two +1/+1
counters" in addition to its other effects.