Nayra, Sublime Mystic

Flying
At the beginning of your upkeep, or when
Nayra, Sublime Mystic enters the battlefield,
remove all charge counters from it, then
put four charge counters on it.
Whenever a player casts an instant or sorcery
spell, remove a charge counter from Nayra,
Sublime Mystic. It deals 1 damage to any target
and you draw a card.