Tip overview

Make sure you pickup Totemic Ward which gives CC immunity to anyone in your healing totem range. This can cripple a Torvald's Ultimate. Also great load against other CC champs like Cassie, BK, Tyra, and Pip Evil Mojo(Chickens).

you flank him from behind with grumpy bomb and bye strix

You should put a mine at your current position or at a point where you know he MUST come around. As you hear your mine you have 2 choices: 1.you kill him 2.you use your teleport to get away I would recommend to teleport to/near your team.

As @mcdude said. Save your reversal untill she had used her pounce. After that try to get as close as possible to get a punch on her. A decent amount of maeve players freak and use pounce to get some cover before going out again. Chase her.

strix is very strong against vivian, just stay as far as u can away and shoot her