Puncture in Spacetime

If the majority of mana spent was {b}, then every upkeep, each opponent loses X life, where X is the amount of black mana you spent to cast this card.
if the majority of mana spent was {w}, then every upkeep, you gain X life, where X is the amount of white mana you spent to cast this card.
"this is just the beginning, the beginning of something greater than any of us have ever dreamed of"