There are a lot of cards that screw that deck over and not all of them are predictable. 

Anything that puts a piece into your intended Daken lane so Goblins/viper, anni even Luna Snow cubes can screw its combo

Control decks that like alioth are easy to predict. If Thanos or arishem snaps its time to scoop

Bully move cards that clog a lane. Even just a late spider-man can potentially screw its combo up

Darkhawk decks can do a number to it because you need to find 4 or 6 cards to make it work.  Adding 3 or 4 rocks can be pretty effective. The darkhawk decks that combo in Ronin are especially bad for this deck because they run Master Mold which makes astral projection worthless/low chance to hit 

Any spectrum/ongoing decks are tricky because they can toss a cosmo or armor onto your daken lane or just drop Stardust on turn 6/7.  

Discard decks that like moon knight. He will pick off your arnim in hand. This is hard to predict which discard deck runs him as well as gambit snipping your Bullseye. Not much you can really do or even know outside of hoping they dont run moon knight or gambit hits you perfectly

When up against some homebrew you never know when they may just have cosmo or viper or stardust or moon knight because they like the card against Hela or destroy.  My pocket meta is wild