Okay, but I wish I could still forfeit when I see you coming.
Both your pets have all their attacks in the same family, so adding some attack variety to your team might be a good idea. Animus is vulnerable to and weak against elementals. Valk is vulnerable to critter attacks, and weak versus aquatics. So I'd be inclined to include something that is strong against some combination of those.
I haven't gone through your collection to see what you have, but a couple of ideas that occur to me:
A rabbit is strong defensively against elementals, and Burrow is strong against critters, taking care of two of your three weak points.
Wolpertinger has something for all three weak points: he has defense v. elementals, and attacks that are strong v. both aquatic and critter. Plus he's a pain in the bum in general for the opposing team; cc is always your friend.
Electrified Razortooth has attacks from several families, including strong versus both elementals and critters, and his bleed and shield would both work nicely with Unholy Ascension. Downside is he's vulnerable to aquatics, leaving you with only Animus to take care of any of those.
Legs has defense against aquatics and attacks that are strong against elementals.
Finally, I hate to say this, but Anub Idol has defense against critters, sandstorm is strong against aquatics, and he brings his own weather, which is often handy.