I am using Reshef the Dark Being in my deck and I've been thinking of getting a Sword of Deep-Seated, seeing a friend of mine advised me to, and using the two cards as a combo. Will it work?
[ If the effect of Reshelf is needed, let me know ]
It will work, although it leaves you vulnerable since you won't draw anything except "Sword of Deep-Seated"...
All right. Now, do I have to worry about cards such as Imperial Order stopping Sword of Deep-Seated?
No. I believe the only effect that can currently stop "Sword of Deep-Seated" from returning to the top of your Deck is that of "The End of Anubis".