石覆い

Both triggered abilities trigger when Stonecloaker enters the battlefield. They can be put on the stack in either order.

You may return this creature itself to its owner’s hand as its triggered ability resolves. If you don’t control enough other creatures, you must return it.

The ability doesn’t target any creature. You don’t choose what to return until the ability resolves. Once the ability has started to resolve, no one can respond to the choice.