Kresshka, the Dread Wolf

Flying, Fear
Whenever Kresshka, the Dread Wolf enters the battlefield or attacks you may pay {b/r}, if you do all players discard a card and lose 1 life, you may
draw a card.
{b/r}; Discard a card: Return Kresshka, the Dread
Wolf from your graveyard to your hand.