Deadly Pinging Cats

Main strategy is playing Kyrex Coach Driver, then either naturally drawing with Nightfall or using a draw card/marketing into anything that pings. The pinging units do well even by themselves vs an aggro deck and when they die, they make for a nice turn 5 Kyrex Coach Driver+Dark Return, but often you'll want to market or stash them away with Strategize when unneeded.

The usual best unit to make deadly is the Tripwire Grenadin, who deals deadly twice directly and potentially a third time as a blocker. If you're having problems with the meta Aegis units and manage to make it Deadly, you can play it and cast Hailstorm, so you're killing at least 2 units of any size regardless of spell shields. Of course the ultimate best unit and win-condition vs most decks is wiping the enemy side with a Deadly Black-Sky Harbinger ;)
Vs heavy control matchups marketing for a Azindel's Gift is your best friend, easily enabled by a ping to the face.

There's some potential for card swapping, for example I'd put another Vicious Highwaymanif I didn't have to craft it. Also the In Cold Bloods are tailored to what I see in the meta, can be easily replaced for Feeding Times if needed. I considered Second Sights and Portent Readers but they seemed to put me at a card disadvantage too much. Have fun and let me know if you like it or if you can suggest improvements!