The original Magic the Gathering version of Oko gives him the ability to turn an opponent's creature into an Elk. While this would have made him much too powerful in a game with only three lanes of creaturesdrawback has been added to Reality Swap, the most powerful aspect of Oko's abilities it remains: he has a big headstart in blocking it can block all three lanes of the opponent's board. It requires three uses of Lane blocking is usually achieved, and Reality Swaphurried along or enhanced, or a combination of that with cards like {{Card URL|Turn to Frog}}, Sleep with the Fishes or {{Card URL|Imprisoned in the Moon}}. However, although the AI is still incapable, as of October 2022, of replacing a creature with a fourth one, it can sometimes deal with lane blocking in an increasing number of other ways.