As a last minute thing, I blew all my gold and gems on packs to get enough WCs to net-deck a UW aura deck from mtg goldfish.
https://www.mtggoldfish.com/deck/1332884#paperWhat a blast I had with that deck!
Shame there aren't really any quality substitutes for the cartouches though, so that's another deck that won't survive rotation. But, what I wanted to say was, Novice knight was totally awesome in that deck.
As for Avenger's deck, the sword of valeron is busted in limited but totally clunky in constructed and won't work. Danitha is also too slow and easy to remove. Valiant knight can be a house in a knight tribal deck, but will often be too little too late. All-round the deck is probably too slow for an interactionless strategy.
I'm working on a boros tokens, hyper agressive deck that may or may not be viable post-rotation (pre-rotation it certainly was).
Creatures (21)
4 x
Dauntless Bodyguard4 x
Skymarcher Aspirant2 x
Snubhorn Sentry4 x
Relentless Raptor4 x
Benalish Marshal2 x
Legion Warboss1 x
Aurelia, Exemplar of JusticePumps (6)
3 x
Pride of Conquerors3 x
Heroic ReinforcementsAuras (4)
4 x
DemotionTokens/Ramp (7)
3 x
Legion's Landing4 x
History of BenaliaLand (22)
3 x
Mountain4 x
Clifftop Retreat4 x
Sacred Foundry11 x
PlainsCan't really say how good demotion is, but it should help the all-in hyper agressive strategy and boost the permanent count for the city's blessing. If it doesn't work out, I'll screw around with more mentors and snubhorn sentries and perhaps the Goblin Instigator as an extra go-wide tool.