(This includes disguise, cloak, and in games involving older cards, morph and manifest, as well as a few other effects that turn cards face down.) Common methods for doing this include using markers or dice, or simply placing them in order on the battlefield
Rick, Steadfast Leader
Where she really shines is in her ability, which says that whenever she attacks, her controller may put an Angel, Demon, or Dragon creature card from their hand directly onto the battlefield, tapped and attacking the same opponent Kaalia was attacking
Its specifically avoided in Commander precons because these products currently never include double-faced cards for logistical reasons
Rather than a fast-paced aggro deck, this is a slightly slower, support-focused deck filled with characters of the same type