Oston, the Reckless

Flying, mountainwalk
Whenever Oston, the Reckless deals combat damage to a player, discard any number of cards, then draw that many cards. Oston deals that much damage to target creature an opponent controls.
"A human once told me about a saying they have, 'Throw caution to the wind' I believe he said. He was a good poet, but an even better snack."