I want to peresent u my build to tryndamare. I chose this runes becouse u need just infinity edge to get 100% crits. The Black Cleaver and Stark's Fervor I think u dont need more. I recommend to play tryn on 3 vs 3. He can go very fast bottom line becous he can spin over wall and help team. He need a lot of life steal. Tanks and player who play agains tryn buy thornmail or other stuffs so he need it.