Torrential Gearhulk [Kaladesh Inventions] Grand Prix Promos and that player can't activate

and that player can't activate abilities that aren't mana abilities

Set: Limited Edition Beta Type: Artifact Uncommon Cost: {1} Whenever a player casts a black spell

The sea gives

−3: Return target creature card from your graveyard to the battlefield

Now they call him their first lord

Torrential Gearhulk [Kaladesh Inventions] Grand Prix Promos and that player can't activateSet: Kaladesh Inventions Type: Artifact Creature Construct Mythic Cost: {4}{U}{U} Flash When Torrential Gearhulk enters the battlefield, you may cast target instant card from your graveyard without paying its mana cost. If that card would be put into your graveyard this turn, exile it instead.