When it comes to getting cards out of the grave randomly or from your hand, I'd lay all the cards facedown and kinda mix them a lil bit than just shoot in the dark pick one
Thats why I think theyre best suited to jump into the fray alongside Kediss, Emberclaw Familiar
Or you could just blow up all your creatures with Fell the Mighty and get those Sanguinary Priest triggers instead
No inventory, no risk, just results
Same cost to play, cheaper to activate, same discard-to-tutor effect, but it lives on a 2/2 body that requires summoning sickness to wear off and can be removed before you get value
Ward 4 is an absurd level of protection - players wishing to target Kappa Cannoneer with removal spells will need to pay five mana at a minimum to do so without it being countered, and that's assuming the removal spell only costs one mana