You can spend seven mana over and over again at sorcery speed to make your dork +4 power that turn as a win-con mana sink
This is how those target spell cards work they go on the stack after/above the cards they target, so as you work your way down the stack they will apply their effects before that targeted spell does and if their effect is to remove that target from the stack prematurely, then it will never get to resolve at all
Not only have they been through a lot of giant apocalyptic events before (see above), but this isn't even their first Phyrexian invasion
Its stats scale with the number of fungi and saprolings you control, turning your growing board into a massive threat
This is the type of novel design space that gets me excited, and Id actually bias towards Rendmaw as my commander instead of Winter
Plus, those six cards are new to Magic and different for each Scene Box, so across all four there's a total of 24 new-to- Magic cards