Say you cast Fireball with X=0, targeting enemys creature, which was brought into the battlefield by Makeshift Mannequin, and you own creature under Ice Cage
When we get competent tools to fight it, like Darksteel Citadel or Crucible of Worlds, they create a lot of value
Like most Magic: The Gathering cards, the value of Tireless Tracker depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Final Fantasy Commander)
The rules text on cipher cards says, encoded on a creature you control, and though it might seems that means you are targeting your creature, you're not without the target language
Thats where landfall comes in
I took it apart for parts a couple of weeks back, and when looking for new Temur commanders printed this year, was dismayed to find that Miirym was ituntil the Tyranid Swarm is available