Mechanical nature

Equip {4}
Equipped creature gets defender, artifacte type
and "{t}{3}: all beast creature under your controle
gets +X/+X and lifelink until the end of turn (X
is egals to the number of artifacts under your
control) "
When the equipped creature dies, equip the
mechanical nature to the target creature paying
{1}{c}{p/c} instead the Equip cost.