Dragon Slayer Ornstein

Double strike, vigilance
Whenever you cast a creature spell with mana
value 5 or greater, you get an experience counter.
Kalemne, Disciple of Iroas gets +1/+1 for each experience counter you have.
"One of Gwyn's most trusted knights. After the gods
fled Anor Londo, Ornstein, and Smough were stationed to guard its cathedral, and the princess within."