As I alluded to earlier, the life transaction isnt only in one direction
Wort, the Raidmother is the only way to give conspire to good spells, because conspire was designed more as a Limited mechanic, so its cards have small effects
FromTheShire: Normally you really want to wait to drop a big lord effect like this until it will end the game since if it just sits out it will eat removal, so being able to natively recur it from the graveyard is extremely nice
Ethan's Pinsir #1Uncommon $0.07 Yanma - 002/182 #2Common $0.08 Yanmega ex - 003/182 #3Double Rare $0.54 Pineco #4Common $0.07 Shroomish #5Common $0.17 Breloom #6Common $0.07 Cynthia's Roselia #7Common $0.17 Cynthia's Roserade #8Rare $0.25 Mow Rotom #9Common $0.09 Shaymin - 010/182 #10Uncommon $0.28
Phantom Train becomes a spirit creature when you activate it, and you know what's really good against spirits
There was also this: I found (and won) a lair bonus fight for an extra copy of Time Walk