Sir Leon, the Knight-Captain

knight spells you cast cost {1} less to cast.
{r/w}{r/w}{r/w}{r/w}: Look at the top four cards of your
library. Put all knight cards revealed this way
into your hand and put the rest on the bottom
of your library in any order. Knights you control
get +1/+1 until end of turn for each knight
revealed this way.
"To me! Defend the citadel!"