So, when youre purchasing a code, pay very close attention to it
(Targeting opponents, anything they control, and/or cards in their graveyards is a crime.) Gain control of target creature until end of turn
Of courseif you get this late and have more lands than your opponent it basically does nothing and that is a significant downside Giving yourself hexproof almost never matters in Limited You can use this to sort of give you more life to work with, but the main problem with that is that if youre dropping to 0 life for some reason and your solution to that problem is Phyrexian Unlife wellyou probably didnt really deal with whatever is about to drop you to 0 life, so youre likely to get poisoned pretty quickly
The rarity isnt enough, though
That fifth damage seems like it could well be relevant, but also the extra point of player damage is meaningful as well
7 Inga And Esika Two of Kaldheims coolest customers collide in this case study of cosmic co-operation