Lightning Helix deals 3 damage to any target and you gain 3 life.

Reveal cards from the top of your library until you reveal an artifact card. Put that card onto the battlefield and the rest on the bottom of your library in a random order. Madcap Experiment deals damage to you equal to the number of cards revealed this way.

({T}: Add {W}.)

Destroy target artifact or land. It can't be regenerated.

Your life total can't change. (You can't gain or lose life. You can't pay any amount of life except 0.)

Destroy target land. Its controller may search their library for a basic land card, put it onto the battlefield tapped, then shuffle. Draw a card.