The best duos with Time have proven to be Ghostmare (Nightmare, Ghosts, Steals, RT's/Eternity), Ghostal (Dims, HG's, Fractal, Ghost+Dragon, Eternities) and simply complementing Time with things like PC and sturdy creatures (Deflags, Phoenixes, Steals). You can make mean stalls with Light and mean rushes with Life (Mitosis+SoR) as well. Earth is a common element to go to for non-combo rushing and denial (Grabby, EQ+RT/Eternity), of course.
Those are the primary duos I'd recommend first.. of course you can duo any elements :>
I have an Eggbow I like using quite a bit x)