Board Thread:Plants vs. Zombies: Garden Warfare 1 & 2/@comment-5760976-20151226210131/@comment-5792287-20160113151345

As for your question, Z-Mechs appear to have a very long cooldown so no, you can't just use it whenever. As for Boss Mode, has it been proven that's even returning in GW2? As far as I know, it wasn't a very popular mode, so why would they bother bringing it back?