Play Aether Rift, thats how
Toluz was played alongside Raffine, Scheming Seer in Standard, and you can play it in discard-heavy strategies
With only a single printing from eleven years back, Through the Breach really shouldnt be as low as $13, seeing that decks that runs Through the Breach wants three to four copies of the card
Delve lets you exile cards from your graveyard to reduce spell costs
If you can cast this with no lands and a bunch of mana rocks, you get a nice lock going, but its far away from mass land destruction cards
As for the remainder of the game, we may be unable to take the rest of our Prizes in the face of a fully-loaded Gardevoir-GX taking Prizes every turn