Once Destiny HERO - Destroyer Phoenix Enforcer hits the field, there's a very good chance it will never leave it for more than a turn before coming back
While its often overlooked, dont forget that Skullclamp also gives +1 Power, allowing you to sacrifice creatures with more power while still getting extra card draw
The name Glimpse, the Unthinkable can't be chosen
Collected Company was a really good card, to the point where Wizards later admitted they probably would have banned it in Standard if they did bannings back in 2015 the way they would do them a few years later
If you can get two Gardevoirs in your active play slots, then you can double your energy gain this pairs exceptionally well with another Mewtwo EX to have two of each card
Anytime you cast a spell of one of these types, Jamie gets +X/+X for the turn, where X is that spell's mana value