With their Search and Rescue ability, anytime you put a card into your inkwell, you can bring back a character card from your discard back to your hand
This is also a very aggressive planeswalker design, so it defends itself fairly poorly you cant simply cast Chandra and remove a threat, a near-and-dear ability for playable walkers
Corpse Explosion: A selective boardwipe for 3 mana at the cost of exiling a body from your graveyard seems like good value to me
It gets its combat stats based on the number of lands you control, and it even returns all lands from your graveyard to the battlefield tapped when it enters
In this case, Enter the Infinite would draw your whole deck (whichif you can't win at that point, I can't help you), or Jace and Doubling season would combine to let you cast a spell out of everyone's deckincluding that Enter the Infinite that just got shuffled back in