Why is Sigurd a mage tank in feh

Cause Reinhardt was relevent

Tyrfing gives 20 res to the user (and the miracle skill) in FE4

Because tyrfing is an anti magic weapon.

Gah! how could you! you spoiled a 22 year old game for me!

Reinhardt was too powerful at the time, and someone needed to stop it. So Sigurd and his wife Deirdre decided to kill him a bunch. Now, that’s why we don’t see a lot of Reinhardt in Arena anymore.

Because He Don't Like BBQ Sauce.