I have a Witchbane Orb on the field. My son has a Jace out that discards all kinds of cards. My understanding is that the Witchbane stops the discarding from happening. Does the Witchbane stop all Planeswalker abilties? He also had another enchantment out (not sure which one) but it was when target land is tapped put the top three cards into the graveyard. Would Witchbane block that? We're just kinda confused on what Witchbane will stop and what it will not. Thanks for any help you can give me.