Alright, some general comments, some of which I missed the first time, then I'll get into specific cards:
Legendary Creatures: When you give a creature a title, such as "Flashing Mage Warrior" you should mark it as legendary- both to avoid balance issues and to make sense, because two of one unique character shouldn't appear.
Naming: You still need to make it so that each legendary card only states its full name once. Here, I'll show you an example: Tajic
They state his full name once, but then just use his first name, it avoids clambered reading.
As for single cards:
Book of Eibon: "When Book of Eibon leaves the battlefield, exile the creature put onto the battlefield with Book of Eibon."- I took this from Diabolic Servitude
Dark Pulse: Perfect job on this, although I think it would still be balanced at CMC=3
Eibon, the Mage- Don't put comma between to mana costs, you only add a comma between different types of costs, IE: Tapping costs, mana costs, life costs.
Hazzard: Specify that it is hazzard who deals the damage, and currently, this deals 2 damage a turn. if you want it to deal 1 damage, say "at the beginning of your precombat main phase." If you want it do deal damage twice, once for each main phase, say: "at the beginning of each of your main phases"
Nyarlathotep: Nothing wrong here.
Good job!