I had a sweet one where I mulled nat pagle and cho, and drew rend backhand and Etc, then won off the back of t2 key thuzad, t3 Kel thuzad, t4 kel thuzad :P
I mean it doubles each turn if triggered yes? Monastary Mentory is better if you're full on storm, but this card is better over more turns and a less explosive deck, which is what limited environments usually have?
http://whymtgcardsmith.tumblr.com/post/145778371209/a-fun-game-to-play-with-this-card-is-what-card
In the grand tradition of fun MTG thought excercises, (See the "change a word" reddit thread for a fun time and a good laugh)
Fan favorites from the comments are
Warp World
Each player shuffles...
I double hero's downfall. I call it the black oblivion ring, but I'm mostly lying :P
I've also seen Ruinous path awakened 0 times, so I guess if you want to nerf downfall...
I mean the regrow landy one is enough to spark my curiosity. He's gotta go infinite somehow right? Or at least do something really broken?
The rest absolutely