What are the official rulings regarding Shalai, Voice of Plenty and Hallar, the Firefletcher in the game of Magic: The Gathering?

Official rulings for Shalai, Voice of Plenty in Magic: The Gathering state that she can give herself hexproof and can also give other creatures hexproof.

For Hallar, the Firefletcher, the official rulings state that when you cast a kicked spell, Hallar gets a 1/1 counter and deals damage equal to the number of 1/1 counters on it to any target.