In fact, there was a small sprinkling of one or two in these sets, except for Doctor Who, which gave us six
Nasty card flow, and you'll load this up with other Threaten effects, and you can add in Sacrifice stuff too like Goblin Bombardment or Viscera Seer to "Steal N' Sac!" I love this so much
Chaos: Whenever you roll Chaos, choose any number of permanents you control, and put divinity counters on them
The comp rules clearly state that echo merely checks if the card was in play under your control last turn not if its echo cost has been paid
Opt also being such a cheap and painless card to play has a lot of good interactions with prowess style effects and can be employed like a combat trick
Disney Lorcana players rarely get to see the concept art we use to develop sets