Metalhold the Moving Blockade

Activate this card by targeting any number of Level 4 Machine-Type monsters you control; Special Summon this card as an Effect Monster (Machine-Type/EARTH/Level 4/ATK 0/DEF 0), then equip those face-up monsters to this card. (This card is also still a Trap Card.) If Summoned this way, this card gains ATK equal to the combined ATK of the monsters equipped to it by this effect, monsters your opponent controls cannot target monsters you control for attacks, except this one, also your opponent cannot target monsters you control with card effects, except this one.