Greater Amygdala

Spells you cast cost X less to cast, where X is the
number of opponents who have more life than
you (round down.)
At the beginning of each player's precombat
main phase, that player may reveal a card from
their hand. If that card is the first spell that
player casts this turn, it can be paid with 1 life
per generic mana and 2 life per colored mana.
Then, another target player gains life equal to the amount lost.