Retreat to Coralhelm, Sakura-Tribe Scout, and a bounce land like Simic Growth Chamber establish a strong loop to get infinite landfall triggers, and thats just the simplest combo to come to mind
Someone on the team (I wasn't on the team, so I don't know who) said, "Wait a minute, we did Maguses for all the permanent types, save planeswalker
Breach the Multiverse costs seven, has each player mill ten, and you can choose a dork/planeswalker from each graveyard and send it to your side
I can only guess that its down to the card being completely symmetrical, since most decks seem to want to use the graveyard in some way
The added flexibility makes it an exciting tool for an already tricky deck
Its an obscene ability, and were expecting a lot from this Kid