4 primetimes

[Killin88]

I have 4 {primetimes titans} and I feel I'm not using them effectively My friend says to get a bunch of the uncommon duel lands from zendikar but I have a mono green deck that uses them I wanted to know if anyone had a build for them (idk colors I'm going to destroy my old deck) taking all suggestions

[Wally]

There are 4 of them in my eldrazi surprise deck under modern.