This is a deck that I actually play very often with a win ratio of 4/5. Main objective:Every cards are oriented to gain +1/+1 counter and when Corpsejack Menace arrive in the battlefield you win the game. You will need to protect him at all cost its the keycard of the deck. If he die, you can use Haunted Fengraf to revive him from your graveyard.Theres a lot of Creature with scavenge in this deck so keep them in your graveyard when they die until Corpsejack Menace arrive on the battlefield.
Cast Scute Mob at your 5th turn (you don't need to loose it for nothing) and only if Corpsejack Menace is already there then you will get a 9/9 creature for 1 mana. not bad
Revenge of the Hunted and Blessings of Nature: If you got a Sluiceway Scorpion on the battlefield and is still a 2/2 and you draw Revenge of the Hunted, you will get at minimum a 8/8 deathtouch creature that can kill 8 target on opponents side so it's like a Day of Judgment but only on enemy side.
Troll Ascetic and Thrun, the Last Troll are there for defense until Corpsejack Menace arrive or contagion clasp. If you draw a Rogue's Passage you can use it at offense too.
With a lot of creature in this deck you can protect your planeswalker Vraska the Unseen until you can pop 3 assassin with player killer and use them with Rogue's Passage to win the game.
Dreg Mangler can be use in all situation. Surprise attack 3/3 + 1/1 from Oran-Rief, the Vastwood and if it die you can scavenge it.
Predator Ooze is so nice in this deck with Corpsejack Menace you will get +2/+2 every turn just for attacking with it and if you got Contagion Clasp its a +4+4 every turn AND if you kill a creature you will get +6/+6 for one turn so crazy
Contagion Clasp + Corpsejack Menace: The clasp can kill a 1/1 and you can proliferate with +1/+1 counter on every creature you control. And more if you control Corpsejack Menace you proliferate with double +2/+2 counters.
Death's Presence is so useful Imagine you get a Scute Mob entering on the battlefield with 8x +1/+1 counter on it because of Corpsejack Menace. You attack next turn and he die, you will get 9x +1/+1 counter *2 so 18 counters to add on one creature. And if your next creature with 18 counters die next turn you will get 36 +1/+1 counter on next creature. Maybe I will add one more Death's Presence on my deck.
If you love this deck just vote for it and if you can suggest me other card that can be useful for my sideboard or the deck your welcome to do it.