Siegfried, Saber

Vigilance, Trample
Servants Constitution - This creature can not be
exiled.
Armor of Fafnir - This creature can not be
removed from the battlefield unless it receives
exactly 1 combat damage.
Siegfried, Saber can not gain Indestructible.
"I have little power myself, but I will be happy if
I can be of help to you."