The Cure (Kavu Predator / False Cure)

[DrJones]

Quirion Ranger is not there just for the wasteland (though it's very good against it). It's there because it's "mana acceleration" when you miss a land drop, and against aggro, it untaps your mongrels/kavu/tarmogoyfs to stop them from racing.

Edit: Quirion ranger also pumps mongrel, and allows you not to play lands from your hand if you don't have to (saving them from mongrel, protecting them from armageddon, and also good for bluffing)

I cannot run Leyline of Lifeforce in my sideboard because I cannot afford to mulligan until I draw it unlike you, that have confidant. I run Xantid Swarm maindeck against control, which seem to work. At worst, they attract counters and swords (so it's basically a duress that can be pumped).
But assuming I could run it, I should cut cards from my sideboard. Which ones to cut?