It does not even need to be your own stuff dying, just that two things died before your turns end step
The token number became clearer and was presented in a consistent format (I.e
Call for Unity has the new Revolt ability word, which activates whenever a permanent you controlled left the battlefield this turn
Postboard, you can be more aggressive as they need to make their deck relatively vulnerable to that in order to not just die to Excruciator, and you want to threaten them from multiple angles to put them in difficult positions
Laurine's a solid combatant even without the extra sacrifice text, since a 3/3 first-striker holds its own in combat pretty well, on offense and defense
These decks can struggle if the game goes on too long, but youre still more likely to win a lot more than you lose in the lower ranks of MTG Arena