Torrential Gearhulk represents the exaggerated claims that control decks in Kaladesh were dead
The majority of storm cards are designed as payoffs and win conditions, inviting players to construct the rest of their deck in a way which can chain spells together and build a very large storm count so the following payoff card is immediately lethal
At the end of the game, if you still have any foretold cards in exile, reveal them to all players so they know the future you foretold was an honest one
So, it had a disadvantage attached to the cheap cost
Creatures (27) 4 Lovestruck Beast 2 Questing Beast 4 Edgewall Innkeeper 4 Bonecrusher Giant 1 Tangled Florahedron 4 Kazandu Mammoth 2 Magda, Brazen Outlaw 2 Vorinclex, Monstrous Raider 4 Goldspan Dragon Planeswalkers (1) Lands (24) Spells (8) In an example of high-level deckbuilding, the good synergy-agnostic card goes in the pile of powerful cards
Time reminders, customizable deposit ceilings, and cool-off windows are now standard, but execution matters