The main win condition (other than Thoracle) is Doomsday
It's the kind of top curve that can certainly win the game, but not something you're always in the market for
This is especially powerful in a multiplayer game of Commander when you get a variety of cards in exile
Champion Changelings: Changeling Titan , Changeling Berserker , and Changeling Hero Changeling Berserker, Changeling Hero, and Changeling Titan can each champion each other, and create a loop of enter the battlefield triggers
If in your second attack that turn you land at least one blow with a 7/x creature, all your creatures will untap
Endrek Sahr is an incredibly powerful card, and in the right hands it can be the cornerstone of an entire strategy