I choose [c]Thrun, the Last Troll[/c]
Brawl Legal Vintage Not Legal Timeless Not Legal Commander Not Legal Pauper Not Legal Oathbreaker Not Legal Penny Not Legal Baldur's Gate Wilderness Dungeon Crash Landing Search your library for a basic land card, reveal it, put it into your hand, then shuffle
Its one of the best exploits of the mechanic
Firstly, you can use it to cheat mana costs
As a result, Commander releases are more similar to Standard-legal set releases than to other supplemental products, in that it's pretty much impossible for a Commander deck to have a positive expected value over the long term
Once you begin to cast a spell, losing control of Muldrotha won't affect the spell