2021-06-18
Returning the Forest you control to its owner's hand is the cost to activate the ability. Once you activate the ability, no one can try to do anything to the Forest to stop you from activating the ability.
2021-06-18
You can target any creature with Quirion Ranger's ability, not just a tapped creature.
2021-06-18
You may return any land you control with the subtype Forest. It doesn't have to be one named Forest.