Toast to Science

Eureka {3}{w}{w} (If you discard this card, discard it into exile. When you do, cast it for its eureka cost or put it into your graveyard.)
Each player gains life equal to the number
of spells with Eureka in their graveyard. If
this spell was cast for its Eureka cost, gain
life equal to the total life gained by each opponent as well.