Pia Nalaar, Consul of Revival is the perfect home for this new card
Commander precon card) Experimental Lab at 3G utilizes manifest dread, but with the addition of two +1/+1 and a trample counter, turning the manifested card into an immediate 4/4 trampler, creating an instant value-per-value threat
I am generally a fan of Charm and Command cycles, as I think they allow for interesting gameplay, since you can change their function in the context of a given game as opposed to it being rigid in what it always does
If you roll more than one die at a time, however, that does count as multiple die rolls
One of the things a higher-complexity set could allow is the creation of higher-complexity mechanics
Cards like Cruel Somnophage will appear in both the regular storybook frame and the showcase Adventure treatment seen below