When using a transforming card, the mana identity of your Commander deck is all the colors that feature on the chosen side of the card, including the transform cost
Ixalan block (2017) Ixalan block also made use of double-faced cards
A lot of that is thanks to Zurgo Stormrender, a three-mana creature that creates tokens but lets you either draw cards or drain your opponents whenever a creature token you control leaves the battlefield
Be bold and work Opportunity, Blatant Thievery, or Nexus of Fate into your deck
You stack the evoke and enter the battlefield triggers in the same way as I just mentioned, and if your opponent has removal, theyll feel forced to use it on Grief before you can take it from them
Ive already heard some folks on the high-powered end talk about it as a replacement for Force of Will