There are many expensive Dimir cards in Gatecrash and although your opponents could be blown away by drawing Gruul cards, they may also be playing Boros
I ended up using the MTG Wiki, skimming through each popular tribe on EDHREC, and browsing through Scryfall Tagger hoping to find most of the good ones, but it's possible that I missed a few gems
Falthis gives your commander(s) deathtouch and menace, including itself if you run it solo or partnered
You can't beat having offense and defense wrapped up in one neat package
Mikokoro, Center of the Sea A land card from Magic: The Gathering's Roadside Reliquary Kamigawa: Neon Dynasty set
Core Cards Tier 3 Dreadful is the third best finisher behind sanction/inscription, with some bonus utility as a combat trick and tempt source