Jackson, Reckless Youth

You may only cast [cardname] only during your declare attackers step,
It enters tapped and attacking
Commander persist (if this card would be put into the graveyard or command zone from the battlefield,
if it has no -1/-1 counters on it, return it to the battlefield with a -1/-1 counter on it)
If [card name] is attacking, no player may activate abilities or cast spells
When [card name] persists, discard your hand.