Obi-Wan, Master of Soresu

Double strike, vigilance
Whenever Obi-Wan, Master of Soresu blocks, it
gets +2/+2 until end of combat.
At end of combat, if Obi-Wan, Master of Soresu dealt combat damage to a player, you may cast a sorcery spell with mana value 3 or less from your
hand without paying its mana cost.

"Obi-Wan is a great mentor; as wise as Master
Yoda, and as powerful as Master Windu."
—Anakin Skywalker