how to use pokemon cards Route 1: play the Pokémon TCG How to Play Pokémon Cards:

With plenty of targets in your graveyard, you can wear down an opponent with extra attackers or even trigger some good enter the battlefield abilities again.

Wouldn't a discard effect be much better

It even forms a pair with a Cramorant card, which you got from the same promotional box

Xira Arien Rarity: Rare TYPE: Legendary Creature SUBTYPE: Insect Wizard CMC: 3 Mana cost: USD: $20.78 EUR: 22.41 TIX: 0.00 EDHREC RANK: 16680 (1/2) Flying , : Target player draws a card

then shuffle your deck

If Petty Theft leaves the stack in any other way (most likely by being countered or failing to resolve because its target became illegal), it won't be exiled and you won't be able to cast Brazen Borrower later