If a creature with persist that has +1/+1 counters on it receives enough -1/-1 counters to cause it to be destroyed by lethal damage or put into its owner's graveyard for having 0 or less toughness, persist won't trigger and the card won't return to the battlefield
Inspiring Overseer Inspiring Overseer is basically Priest of Ancient Lore with flying
First, lets look at the two starter decks from this expansion
Spellskite is generally very annoying regardless of what you are playing and with three more Toughness than Revoker it is often a more effective disruption tool
We also have Labyrinth Raptor, partly for the flavour of Minotaurs and labyrinths, but mostly because it synergizes well with Sethron's ability to give our Minotaurs menace
Firebending rewards you for attacking by generating red mana during combat, which means cards like Firebending Student, Fire Nation Cadets, and Boiling Rock Rioter turn every swing into extra fuel for tricks, removal, or activations