So I was all excited to finally try my Angel Dragon out. Used this lineup: Horse, Plant, Dragon, Void, Archer
Thanks to Plant, Dragon had full energy before he finished walking and then it was just a matter of waiting for someone to die. Void died first, and since Void doesn't have the Reverent tag, remained dead. 40 seconds later, Archer died and I got super excited to watch it happen!
And nothing happened. Will attack again when cd is up and record this time. Very disappointing.
edit: Well, I've now used 5 attacks and in 4 of them he never had a chance to trigger (this is hard to test in FP) ... and in the 5th worked. So Idk.