The precon has maybe a few too many defensive punisher cards, but it plays the role of the aggro deck well enough
We forgot the last part: if you activate Rakalite's ability even once, you return it to your hand
Bear in mind, an indestructible creature can still be exiled , and Knight Exemplar doesn't have indestructible itself
These include Glacial Dragonhunt (loot, removal), Rally the Monastery (Monk tokens, removal, pump), Channeled Dragonfire (removal), Broadside Barrage (loot, removal), Chart a Course (draw), and the massively powerful Jeskai Revelation (bounce, direct damage, creature tokens, card draw, life gain)
If a creature token an opponent controls dies, it goes to that player's graveyard as normal before ceasing to exist