The Volcano of mysteries

This enters the battlefield tapped. {t}: add {g}, {u}{u}, {w}{w}{w}, {b}{b}{b}{b}, {r}{r}{r}{r}{r}, or 6 PHM. Whenever this untaps, it deals 3 damage to any multicolored card. If a creature you control is dealt damage to by this, tap The volcano of mystery. If you are dealt damage, you may search your library for a card called neon bomb, and put it into your hand.