We were wondering how Blatant Decoy interacts with Khadgar, so we built this Blatant Decoy Khadgar Big Minion Mage deck to test it out. And, it was a lot of fun! We ended up with a 66% winrate (small sample size though), but you could probably drop Khadgar for another stall/control tool to make it a bit stronger.

But honestly, it's just a lot of fun to slam a bunch onto the board at once. If you've played both Incanter's Flows, then when you've got 10 mana, you can drop Khadgar, Blatant Decoy, and Conjurer's Calling all on the same turn. You'll have a full board to surprise your opponent!

We've got a gameplay video at https://youtu.be/_akR3j-E8ug if you'd like to see it in action. Enjoy, and have an awesome day!