Battle-Mech Soldier

When this card is played at cost, add one "Battle-
Mech" creature from your deck to your hand,
except "Battle-Mech Soldier".
Once per turn, you can equip this card to a
Machine-type creature as an upgrade or
unequip it to play it as a creature.
When a creature equipped with this card would
be destroyed, you can destroy this card instead.