I think i've cast satyr wayfinder more than basically any other card from Theros block, unless we count infinitely recasting Voyaging Satyr. Theros got me to play a lot more green decks while it was around!
I have so many great stories about
Satyr Wayfinder, in the context of cube alone. Just last night, my BUG reanimator deck all but had the game locked up against my white weenie opponent, as I'd returned both
Sagu Mauler and
Terastodon to my board (with all the elephants on my side, natch). Still, my opponent was at 30 while I was sitting at 6, and he had a team of tiny animals, so I was taking a measured approach to attacking his life total, lest he swing back for lethal.
Having dredged a bunch over the course of the game, my library was growing thin. Still, I felt like it was worth my while to dig a little deeper with
Compulsive Research, to try and lock up the board once and for all.
Me: Man, my deck is getting thin. There's only four cards left.
Him: You're going to mill out!
Me: Nah, I think I got this, you're down to 9 now. Attack with
Sagu Mauler again.
Him: What's this under my
Fiend Hunter again?
Me: My
Satyr Wayfinder.
Him: ...
Me: ...
Him: BLOCK.
Me: ...
Him: Wayfinder returns to play for you!
Mill your last four cards!
Me: ...
Somehow we'd both missed that interaction for the six turns prior... until the turn it really mattered.