One of the best keywords in the game is Last Gasp. You can build decks with a lot of creatures that have this keyword. You can trigger your Last Gasp effects by special cards like Necrom Mastermind
Deck «100% Midrange Last Gasp Assasin»
Intelligence cards
Agility cards
It is a 100% midrange deck because of curve. There are 11 two drops, 11 three drops and fourteen four drops there. In early game to control the board you can use Brutal Ashlander
Cruel Firebloom
Cruel Firebloom
Goblin Skulk
Ungolim the Listener
There are 26 creatures with Last Gasp in this deck. Your opponent should spend a lot of resources to destroy creatures and the tokens from their Last Gasp effect and to control the board. Sadras Agent
Deshaan Avenger
Telvanni Arcanist
Elusive Schemer
If you want to clear the board of your opponent at the same line you will play Indoril Archmage
Tazkad the Packmaster
Necrom Mastermind
There are 9 cards with keyword Prophecy in this deck. You should play 3 copies of Lightning Bolt
Moonlight Werebat
So this deck is good against a lot of midrange decks because of strong creatures with Last Gasp and some good Prophecy cards and creatures that give you an extra card draw. It is good enough against aggressive decks because of a lot of Guards and some creatures with Drain effect. Queen Barenziah
Supreme Atromancer
Tazkad the Packmaster