mtg growing threat commander deck March of the Machine Set Players are only allowed one of each card in their deck Precon Upgrades for "Growing Threat"

Set Boosters The Set Booster, now retired and replaced by Play Boosters, was a great way to get a taster for a new expansions cards if you werent intending to play draft games, or maybe just wanted a few extra cards to build into a deck

It also locks opponents out of the game with Karn, the Great Creator, which gets you into a high bracket but certainly rewards you for your ruthlessness at that level

Breeches, Brazen Plunderer I really wish Breeches, Brazen Plunderers mana value werent 4

Eventually, when both Mishra and the Dragon Engine attack together, they meld into Mishra, Lost to Phyrexia, an equally aggressive finisher that will frequently end games on the spot

Spectral Sailor Spectral Sailor is a cheap and effective spirit pirate

If that wasn't strong enough, in conjunction with all the other Cat synergies you can create, you could pay three mana to double another Cat's power and give it trample when Arahbo is in play