(Your life total may increase if the spell also deals damage to other permanents and/or players, however.) Some instant and sorcery spells instruct other things to deal damage rather than deal damage themselves
The second Bolt is black-bordered with art last seen in Beta
Basically, its hard to kill, and works well in decks that enjoy dealing damage with spells
Fear of Impostors while not strong on its own, fits those roles perfectly
Barrin, Master Wizard (Saga/Legacy/Destiny) Barrin, Master Wizard, though a very fragile 1/1, basically turned every card on your side of the board into an Unsummon
Each of these spells represented what each color could get for just 1 mana on an instant