mtg cards like beast whisperer (Prerelease) (Guilds of Ravnica) | Promo copy written or trademarked by WOTC are not used and any overlapping text or names are pure coincidence Beast Whisperer - Time Spiral:

Officially licensed Stitched Edge Playmat for Magic: The Gathering Commander Series - Release 5 - Three Color Wedge Features exclusive artwork Measures approximately 24 in

These transparent card sleeves are called Inner Sleeves or Precise-Fit Sleeves

For example, the white Mana Noble Heritage and black Mana Criminal background both grant new triggered abilities that fit the colours playstyle along with unlocking white and black Mana cards for their chosen deck, respectively

Sphinx Summoner Unlike other commanders, Sphinx Summoner can be used as an artifact tutor to set up combo wins

Another advantage of this strategy is that it requires minimal interaction with opponents