Well, it’s confusing little bit =)
//Edited Title -Brigby
Hi @Iworb. Looks like you spotted some debug text there. Sorry about that! Rest assured though that the developers are already aware of this issue, and they’ll be working on getting a fix implemented.
Just for your reference though, Steadfast Sentinel’s description is “Eternalize 1”
For what it’s worth, this occurs in the English version with this card as well.