Once you redeem a code in the game, you'll have access to a unique deck that is already created and laid out for you
There are a lot of strong Skeleton cards in the game, some of which were so strong it led to their ban and restriction of certain formats
This alone is not bad at all for MTG 's Commander format, be it casual or competitive, as Blue comes with a lot of good tools to counter opponents' spells, draw cards, and generally control the battlefield
I've been giving you examples from your own deck, and internal synergies
Five life and five mana for five cards is decent but it is inflexible and not a better tool than Skeletal Scrying, Necropotence, Necrology, Yawgmoth's Agenda or any of the top end alternatives really
Its worth noting that rolling dice was initially mostly relegated to Un-sets, like Unglued and Unfinity