I was a bit antsy about putting anything else on it as it would already be precarious in any set that wasn't straight to modern. If devotion is a big feature in a set, having a card that turns it off can be iffy as far as set design goes even if the gods having non devotion abilities mitigates this. Having it playable for a reason other than devotion felt like it would definitely detract from a set too much rather than just probably.
Iron Shod Card Sleeves 2
Artifact - Equipment U (Un)
~ enters the battlefield with 3 charge counters.
Remove a charge counter from ~: Equipped creature gains indestructible until the end of the turn
Equip 1
"Look, I can see where the card is in your deck"
"What if I put it on all of them?"
"... how will you shuffle?"