Rakdos Charm is the perfect antidote to this kind of problem (although not the specifically the Moat one...), it can deal with a selection of troublesome things while remaining useful outside of this scope and perfectly maindeckable without fear of having dead cards or losing much consistency
JUDGE! someone at the table next to you yells
This current metagame has a lot of decks that are either faster than Infect (Amulet) or are as fast as Infect but with more ways to interact with them and punish lifeloss from fetchlands, Growth, and Gitaxian Probe
Tiny Ramp I'm not the only person in Magic R&D with Tiny Leaders fever
With WotC's patented Bundle Technology, you'll be able to carry way more than two things
Brimaz, King of Oreskos Despite not seeing heavy Standard play, Brimaz, King of Oreskos was pushed in Born of the Gods , a set that's arguably on the weaker side when it comes to power level