Instigator Scribe

Unless {r/w} was paid with {r}, Instigator Scribe isn't
red.Unless {w/b} was paid with {b}, Instigator Scribe
isn't black.Unless {w/u} was paid with {u}, Instigator
Scribe isn't blue.
Instigator Scribe costs {u} less to cast if you've cast
an instant or sorcery card this turn, {b} less to cast
if you've lost life this turn, and {r} less to cast if
you've cast a creature spell this turn.
Whenever you cast a spell, you draw a card and
gain 1 life for each color besides white Instigator
Scr