Many transform Commanders essentially function like sagas, if they arent sagas themselves especially the Planeswalker ones, and we all know how linked walkers and Sagas are in the history of design
For Commander, Id love to say that Archive Trap could find a place in a deck sporting Bruvac, but I wholeheartedly believe that the impulse to use it early in the game off an early fetchland would outweigh waiting until Bruvac hit play a few turns later
, Sacrifice another Vampire or Zombie: Put two +1/+1 counters on Kalitas
But as a 2/2 for four that doesn't do anything right away, more often than not, it will probably die to a Shock (or get bounced by a Teferi, Time Raveler or Elked by Oko, Thief of Crowns) before doing much of anything
Illustrated by Volta Creation Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Not Legal Modern Not Legal Brawl Not Legal Legacy Legal Comp