Flying
{5}{R}, Exile Runehorn Hellkite from your graveyard: Each player discards their hand, then draws seven cards.
Exiling Runehorn Hellkite from your graveyard is part of the cost of its activated ability. An opponent can’t remove Runehorn Hellkite from your graveyard in response to you activating the ability.
If a player has no cards in hand, that player discards no cards, then draws seven cards.