It punches its way to number two on this list, with its hard hitting price likely due as is the case with many of these high value cards to its perfect 10 PSA grading
Casting 4-mana noncreature spells isnt easy: If they dont affect the board in a meaningful way, you often fall too far behind your opponent
When the opponent plays with cards that are focused wholly on dealing damage, lifegain can potentially make for card advantage, so long as you are gaining more life than your opponent is doing damage, using a similar base of resources
Creature - Ooze Color tag templates(None) Shadow of Mortality If your life total is less than your starting life total, this spell costs less to cast, where X is the difference
Once each turn, you may cast a spell from the top of your library if it shares a card type with a card exiled with this creature