Draw options like Strike a Good Match and Hypnotize which also forces your opponent to discard are useful for Emerald Decks
And all these cardsexcept the oversized Planechase cardscan be found inside Collector Boosters, not to mention cards with the TARDIS showcase treatment and a bunch of shiny foils
For almost any metagame I can imagine you would be better off with either a storm deck, a counter-burn control deck or red deck wins which is what this deck is trying to be a compilation of
It can be discarded to get rid of one creature or cast/copied to wipe away a board full of critters
1 Stalking Leonin
Number 186 Language English Not Legal Formats Alchemy, Brawl, Commander, Competitive Brawl, Historic, Legacy, Modern, Pauper, Pioneer, Standard, Timeless, Vintage Rulings (1/19/2018) Contraptions are artifacts