Hua Shan, Vulpine Mystic of the Western Mountain

[CNT] Choose either your opponent's ruler or 1 enemy unit of level 3 or less. Exhaust it or return it to its owner's hand (If you chose a ruler, or if your opponent is playing a ruler with no hand zone, the chosen card cannot be returned to hand.)
[Discount]: You may [Put 1 card in your hand on the bottom of your deck.] to instead pay a cost of 2 to play this.
[TD][OD] Choose 1 of the following: -"Scorching Purge": Destroy all of your opponent's fields. Then, choose up to 2 cards in your opponent's graveyard and remove them from the game.
-"Volcanic Wall": Until the start of your next turn, this gains [Retaliate] and [Defender].