That kind of mana advantage warps games, and some decks will struggle to handle a threat with protection from green and black
The goal of this deck is to animate our lands into huge beaters, crushing our enemies under the might of our Forests and Islands
Obviously, its better in 1v1, but even there, a 3/1 unblockable creature/unkillable wall doesnt matter nearly as much, given that its a 40-life format
Nor are they new to Pokmon
That deck actually saw play in one game and managed to win, thanks to some very good luck and the aforementioned very good synergy
It's also a "may" ability, so they don't have to worry about accidentally killing him