I think there is an issue with fetching in the game right now.
Most of the time the fetching mechanic works fine.
Then, a situation like this one pops up and it really grinds my gears.
My deck is full of knights and auras. When Acclaimed Contender entered the battlefield, I was surprised that nothing happened. Yes… I had space in my hand, in case you were wondering.
Is the Cavalier of Night not being counted as a Knight?
I also think enchantment creatures are not being counted as enchantments when a “fetch enchantment” effect happens.
This happened in the legacy training grounds using Kaya.