Sacrifice after III.) I Until your next turn, each creature attacks each combat if able and attacks a player other than you if able
The Job Systems, for instance, have made the jump, but behave differently from the Classes featured in the Dungeons & Dragons set from a few years back
There are plenty of ways to play them off the top of your library, like Oracle of Mul Daya or Augur of Autumn
Yahenni, Undying Partisan has Haste, and whenever a creature an opponent controls dies, put a +1/+1 counter on Yahenni, Undying Partisan
So that certainly suggests an uptick of interest, but what to attribute it to
Merged creatures have all the abilities of every creature in the pile as well as the combat stats and creature type of the topmost creature