Lyse Hext
{1}{W}{U}Legendary Creature — Human Rebel Monk
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) Noncreature spells you cast cost {1} less to cast. As long as you've cast two or more noncreature spells this turn, Lyse Hext has double strike.