While WotC has stated that all MH2s archetypes were designed to overlap in shared colors, a few specific combinations, like this one, demonstrate much stronger synergy
While it boils down to a fearsome, french-vanilla creature with a bunch of scary keywords, the precise combination of keywords Sire of Seven Deaths has can quickly bring an aggressive deck's assault to a screeching halt
Runaway Steam-Kin is great on turn-two and works great with Experimental Frenzy, but its very weak to removal and can be a bad draw later in the game
Thats because if you have no cards in your deck when you need to draw, you lose
However, several spinoff cards and a few errata later, there are now several virus cards allowed in regular play - see the very best below