Doubling as both a threat and a removal spell, this vampire is about as good as two drops get
I Am Duskmourn Ongoing Scheme (An ongoing scheme remains face up until it's abandoned.) At the beginning of your end step, you may cast a spell from your hand without paying its mana cost
But there are a few caveats why it's back here, if you don't control your Commander that's a pretty pricey cost
Splinter does the same when one of your nontoken creatures leaves the battlefield (so it works with something like Ninjutsu or this sets new version of that ability, called Sneak)
It was evident in April 2020 that Lutri, the Spellchaser was a problematic card: every Commander deck that played the colours of blue and red would want a companion like it, and the ability to have access to it at any moment of the game because of its Flash keyword was just ridiculous
You can fight in response to removal, and its a way to avoid being exiled