Im sure this has some kind of broken Thassa's Oracle possibilities in cEDH, and Im sure youll get better use out of it than your opponent in your Pia Nalaar, Consul of Revival deck, and Im also sure someones gonna use this with Drannith Magistrate to ruin your life, but I dont see this making it in most decks
Designer Notes: BONUS INCLUDED
A stuck and defended Norn will end the game against Affinity, Merfolk, and Infect, not to mention causing serious problems for Twin and Abzan/Abzan Liege
When Druid of the Emerald Grove enters the battlefield, search your library for up to two basic lands cards and reveal them, then roll a d20.1-9 | Put those cards into your hand, then shuffle.10-19 | Put one of those cards onto the battlefield tapped and the other into your hand, then shuffle.20 | Put those cards onto the battlefield tapped, then shuffle