What Does Rebuke Do?
Playing Rebuke gives a unit the Silence debuff; it removes all text from the card and any attachments, effectively removing all skills and buffs. That can be a nasty thing to do to a special legendary!
In addition, Rebuke also stuns the target for one turn. This can give you a little extra breathing space for a counter-offensive or final strike.
The card text for Rebuke just says "a unit" not "an enemy unit". That means you can use it as a (rather drastic) way to remove an enemy curse from one of your own units.
Note that units with the endurance skill are immune to stun. So what happens if you cast Rebuke on a unit that has endurance? Will it be stunned? This is something I've not tried, my guess is that the effects of Rebuke take place in the order specified on the card. So the Silence acts first and removes the Endurance skill, allowing the target to be stunned.
This page written for Eternal version 1.21, Card Set 1
Last updated: 9-07-2017