First Striking Rat Colony (Standard)

Trying to find a deck for my first grader to play at a tournament I tried to think around Rat Colony.

A pure black deck would be simple, but red allows a couple of combo's that work well. Usually the issues with a rat deck are that the opponent starts saving blockers or the deck runs out of steam in terms of card draw. Warlord's Fury gives all your rats first strike and let's you draw a card enabling you to keep going.

There is an additional combo for the mid-game. Secret Salvage let's you refill your hand up to twenty or so rats. With Reliquary Tower in play you'll actually get to keep them. Then you can either play rats or cast Lost Legacy on yourself to draw most of your remaining deck and possibly cast a game ending Fateful Showdown.

I tried to build the deck around the green cards of Dubious Challenge (creatures onto battleground) and Heroic Intervention (giving permanents indestructable and hexproof) at first, but I think it will need something more devious for Dubious Challenge than Rat Colony. This might not happen before the next standard rotation.

The sideboard is a collection of cards I considered for the build.