Equip only to a Machine-Type monster. Once per turn: You can activate this effect; it permanently gains 400 ATK. (This ATK gain remains even if this card leaves the field or if the monster becomes unaffected by card effects.) If it battles an opponent's monster, that monster's effect is negated during the Battle Phase only.
How to Get
Negates the effects of your opponent's Effect Monsters
Lol relinquished is outdated garbage (unless you run him with kiwi magician girl and rare gold armor in an actual deck, then he's a threat) as far as I know he isn't protected from destruction effects, only battles.
Lol I run 2 gravity blasters with my ancient gear decks in real life (now that they just got machine reactor support it's ungodly broken, AG's already stop opponents from triggering traps and spells during battle and GB gives them effect immunities as well.)
This card is broken as shit permanent 400 atk per turn and negation of monster effects during the battle phase is just plain unfair,once an npc pulls this out its almost impossible to stop and even if you do stop it you have to be very quick considering how this thing snowballs very quickly
Cards like sphere kuriboh and order to charge will stop gravity blaster but for whatever reason not everyone runs those plus if you don't have them on field or in hand then survival might be a bit difficult
It's even worse how the npcs act like complete dicks when they beat you,one npc I can't stand is Andrew,who despite being a netdecker claims to be a genius,sorry dude but copying other npcs decks doesn't make you good