In Limited, it will occasionally be nice to have to save an important creature while replacing yourself
Fusing them for a massive 8 mana will draw four guaranteed even on a naked hand without anything else and that's great if you topdeck it late game
The opportunities for collectors are obvious, and we felt that it would be a disservice to those collectors for us to blur the lines between common and uncommon cards to such an extent
The player pays 2000 Life Points to activate it, then counts each turn that passes, starting with the turn when Final Countdown was activated as the first one
That means that theres a decent chance at least one player in a game of Commander wont be able to block the creature this is attached to, giving you an easy route to untap your lands
However, since this deck already has strong draw power, the loss of Greninja doesn't hurt as much