Traxigor, Wizened Archmage

Whenever you cast an instant or sorcery spell targeting another creature, roll a d20.
1 - 10 — Target creature is returned to its
owners hand.
11 - 15 — Target creature is returned to its
owners hand and they draw a card.
16 - 20 — Target creature is exiled and the
owner reveals the top card of their library until
they reveal a permanent card. They may cast that permanent without paying its mana cost.
"I'm sure it'll work" Traxigor