Ieyasu Tokugawa, Shogun

Vigilance, Bushido 2
Whenever a nonlegendary Samurai you controll blocks, you may pay {2}{u}{r}. If you
do, return it to your hand. You may cast it
until end of turn without paying its mana cost.
It enters the battlefield attacking another target
of your choice. It gets +2/+1 until end of turn.
You may play this abillity at any time.