Board Thread:Plants vs. Zombies 2/@comment-5760976-20150810004435/@comment-25546049-20150810050613

Well the reason I asked is because someone said Thyme Warp had a PF, so you'd place and it would do it's effect like any instant, and then... does it stay there? Because Thyme Warp supposedly has a PF, and no other instant does, what does it do after you place it?