Howling Galefang

The haste clause is the whole design conversation here, and it points backward at the card's own machinery. Vigilance is the printed default, a fine keyword on a green four-drop that wants to attack and still hold the fort, but the conditional haste is the reward for playing the Adventure game correctly. Casting the Adventure half of a spell tucks the card into exile until you're ready for the creature side; while that exiled card sits there waiting, this Beast gets to swing the turn it lands. It's a deckbuilding tax disguised as a bonus: the body only comes down hasty if you've already committed to a shell where Adventure cards are entering exile as a matter of course. That makes it a payoff piece rather than a standalone threat, tied to the health of the mechanic around it rather than to any single interaction. The phrasing is precise about ownership, too: it counts only Adventure cards you own in exile, so an opponent's stashed spell does nothing for you and you can't borrow their exile zone to enable your clock. Strip the Adventure enablers out and you're left with a 4/4 vigilance for four: serviceable, unexciting, precisely the kind of floor a conditional aggressive keyword needs so the payoff feels earned rather than free.