What do you think of my Zombie/Assassin magic the gathering deck?

okay first add like 5 more land cards, you can't put out your bigger zombies out fast enough with only twenty land, next add more Nightmares and death baron, and put in a grave titan and a few rise from the graves because rise from the grave let's you take a creature from an opponents graveyard and puts it on the battlefield under you control as another zombie and takeout the infernal caretaker (because in my opinion the ability of morph sucks) phyrexian reclamation because you shouldn't have to waste you're own life in a zombie deck also remove pestilence because it doesn't do much. This will work out great