Majaya deck.....help

[markf50]

Alright so I need some serious help with this thing, this deck has so far gotten me uptil the 200-190 rating but id like to aim higher, here's what I've got

Majiya X1
infernal gargoyle x2
Death Mage Thaddeus x3
Shadow knight x3
Grimghast x3
Eternal troll x3
Death collector x2
Morbid acolyte x2

Shriek of VENGANCE x2
Poison X1
Flames X1
Fireball x4
Lightning x4
Acid Jet x2
Tome of knowledge x3
Portal x3
Consuming fear x3
Meteorite x2
Supernova x2