Sari, Supreme Sorcerer

Flying, ward {5}
The first instant or sorcery spell you cast each
turn costs {w}{u}{b}{r}{g} less to cast. This effect
reduces only the amount of colored mana you
pay.
Magecraft —When you cast or copy an instant or sorcery spell, if it's white, tap target permanent;
if it's blue, target player may scry 2; if it's black,
target player discards a card; if it's red, Sari deals
2 damage to any target; if it's green, target player
gains 3 life.