They're about to be sacrificed
This duality makes it a fascinating subject in both lore and battle mechanics, as it embodies opposing elemental forces
This includes cards damaged during production as well as a lower-than-stated number of cards or hits
Flashback is one of my favorite abilities - it creates massive swings in value, lets you use a zone that isnt easily answerable in a profitable way, and makes sure you dont run out of things to do, with or without ramp
It's not hard to see why Phyrexian Arena is so popular in Commander, though it's heavily contested nowadays
Pair her with Spike Feeder in a Selesnya shell and you can remove a counter to gain two life, which triggers the Archangel, which replaces the counter you just spent