This is the perfect card for any member of the "Buster Blader" archetype, who will gain 700 ATK from the equip card and 500 ATK for every Dragon in the opponent's graveyard.
Another good candidate for this card would be "Rocket Warrior", who can't be destroyed in battle while attacking a stronger monster. That means that it could attack and destroy any Dragon automatically without being destroyed itself.
An excellent Equip candidate for this card would be "Elemental Hero Wildheart", because if you activate "DNA Surgery" and declare Dragon, Wildheart would be able to destroy any monster it battles, while being unaffected itself.
Combine with "Mist Body", in case the equipped monster battles a stronger monster.