Hi Hearthstone Design Team,
I would like to suggest this new mechanism for Halkias Rogue card.
Instead of store Halkias soul on a friendly Secret as its current Deathrattle, I got to think that it might be better if the Deathrattle would be to transform his soul into a secret from any class - which in this case it would be more playable in a game for several turns.
I think this mechanism is similar to these other Rogue cards - Anub’arak and Waxadred, when it resummons itself with minimum dependency from the player actions (for Halkias it would be the secrets that on the battlefield), and should be countered/defeated only by the opponent.
What do you think?