If you discard Obstinate Baloth and put it onto the battlefield, you've still discarded it. Abilities that trigger when you discard a card (such as that of Raiders' Wake) will still trigger.

If a spell or ability an opponent controls causes you to discard Obstinate Baloth, and both Obstinate Baloth's ability and another ability (such as that of an opponent's Leyline of the Void) instruct you to put Obstinate Baloth somewhere else instead of putting it into your graveyard, you choose which one to apply.

If a spell or ability an opponent controls causes you to discard Obstinate Baloth, and both Obstinate Baloth's ability and another ability (such as that of an opponent's Leyline of the Void) instruct you to put Obstinate Baloth somewhere else instead of putting it into your graveyard, you choose which one to apply.

If you discard Obstinate Baloth and put it onto the battlefield, you've still discarded it. Abilities that trigger when you discard a card will still trigger.