Mask, the Unrequited

Legendary spells you cast cost {r} less to cast.
This effect reduces only the amount of colored
mana you pay.
{b}{g},{t}, Choose target creature of your choice.
Mask, the Unrequited has protection from that creature, and that creature loses -1/-1 during
your upkeep and Mask, the Unrequited gains
+1/+1.