I'm gold 5 at the moment.. And how would Seargant Electro fit into a gravekeeper deck? My first and only priority is getting the Oracle out as soon as possible and for its effect to activate it would need a GK monster.. and as the lower GK monsters have low attack, that's where the mirror walls come into play as the monsters are bait for the opponent to attack and self destroy
got over 7000 points once and got 2 Econ simultaneously.. and got one through lost duel. This game is an RNG, you just have to keep grinding and farming