His abilities have themes of Food {{Ability|Token|Tokens}}, and stealing the opponent's cards. He can create Food Tokens and fetch opposing cards when they are destroyed, and swap his cards in play or in hand with the opponent. He also has strong removal and mana gain abilities.

The original Magic the Gathering version of Oko gives him the ability to turn an opponent's creature into an Elk. While a drawback has been added to Reality Swap, the most powerful aspect of it remains: it can block all three lanes of the opponent's board. Lane blocking is usually achieved, and Reality Swap hurried along or enhanced, 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.