Deadly Killer Farming

Something I've been playing with while farming the Gauntlet. It seems to work most of the time, the only issues are of course the final boss, and the rare occasions when the game either decides to flood me with Sigil's, or prevents me from getting any of them at all.
I am absolutely interested in any input people have.

The basic idea is field control. Using your deadly/killer units you make sure the opponent doesn't have any units on the field at all. Try keeping your heavy hitting cards like "In Cold Blood" for larger units that you can't simply kill with your deadly ones. Like Rolant for example (an amazing way to get Rolant off the field honestly).
While you use your Zelia to knock down larger units keeping them at low attack/defense, giving you large gaping holes in your opponents field to walk through. Blistering Wasp and Direfang Spider are your go to killers. Because of their low cost, you can sack them with no regrets. Nocturnal Creeper is honestly only in the deck to give some additional draw power (the one thing severely lacking), by making it night. Ripknife assassin not only adds Warcry to the deck (almost always useful), it also means that you can potentially play Zelia turn 4.
Lumen Defender, is not only a healthy deadly unit, the additional +5 health add is super useful since by the time the deck really gets rolling you might be a little low on the health bar.
Venom Rider gives a couple of benefits, while being a moderately useful 3/3 charge, his ability to create another deadly/killer is where he shines. Allowing him to die only helps if you also have a dark return in your hand, potentially adding yet another deadly/killer combo.
Cat Burglar is situational at best, but when her power is useful, more often than not, it's super useful.
Banish is great for clearing smaller units, but it's greatest strength could be in clearing out relics that you'd rather the enemy not have.
(I found this super useful on the one boss where both players start with a Calderan Cradle. Killed the enemies relic turn 3, and the rest was a cake walk).
Some units like the Sand Viper only get better when they die and come back, especially if you've pulled off their ultimate before they were killed off.

So, thoughts?