Combine this with Demonic Consultation. This gets you 2 tutors, for the negligible cost of 1+3 mana and half your life and, if youre as greedy as a black player should be, most of your library!
I like Death Wish with cards (mostly enchantments) that disregard your life total or change the way life totals works - Like Lich, Nefarious Lich, Transcendence, and Mirror Universe. Its not bad with Worship, Ali from Cairo, and Second Chance too.